20fc5bf7df
vcpu_info is crucial for the Xen event channel core. Since both the data and setup steps are identical between architectures, move them to the common file. Since there is no cross-architecture method to call a function on every processor during bring-up, simply leave the setup function. The number of vcpu_info structures available on the shared information page varies by architecture. Instead of hard-coding the count use nitems(). Add a warning message for this being used. Switch to XEN_VCPUID() and use Xen's typedefs. panic() on failure since >32 processors is no longer unusual. royger: Specify 64-byte alignment for vcpu_info to try to defend against vcpu_info crossing a page boundary. Add detection for this limit. Reviewed by: royger
177 lines
4.2 KiB
C
177 lines
4.2 KiB
C
/******************************************************************************
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* xen/xen-os.h
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*
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* Random collection of macros and definition
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*
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* Copyright (c) 2003, 2004 Keir Fraser (on behalf of the Xen team)
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* $FreeBSD$
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*/
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#ifndef _XEN_XEN_OS_H_
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#define _XEN_XEN_OS_H_
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#define __XEN_INTERFACE_VERSION__ 0x00040d00
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#define GRANT_REF_INVALID 0xffffffff
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#ifdef LOCORE
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#define __ASSEMBLY__
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#endif
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#include <contrib/xen/xen.h>
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#ifndef __ASSEMBLY__
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#include <xen/hvm.h>
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#include <contrib/xen/event_channel.h>
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/*
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* Setup function which needs to be called on each processor by architecture
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*/
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extern void xen_setup_vcpu_info(void);
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static inline vm_paddr_t
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xen_get_xenstore_mfn(void)
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{
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return (hvm_get_parameter(HVM_PARAM_STORE_PFN));
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}
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static inline evtchn_port_t
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xen_get_xenstore_evtchn(void)
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{
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return (hvm_get_parameter(HVM_PARAM_STORE_EVTCHN));
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}
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static inline vm_paddr_t
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xen_get_console_mfn(void)
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{
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return (hvm_get_parameter(HVM_PARAM_CONSOLE_PFN));
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}
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static inline evtchn_port_t
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xen_get_console_evtchn(void)
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{
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return (hvm_get_parameter(HVM_PARAM_CONSOLE_EVTCHN));
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}
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extern shared_info_t *HYPERVISOR_shared_info;
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extern bool xen_suspend_cancelled;
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enum xen_domain_type {
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XEN_NATIVE, /* running on bare hardware */
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XEN_PV_DOMAIN, /* running in a PV domain */
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XEN_HVM_DOMAIN, /* running in a Xen hvm domain */
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};
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extern enum xen_domain_type xen_domain_type;
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static inline int
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xen_domain(void)
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{
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return (xen_domain_type != XEN_NATIVE);
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}
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static inline int
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xen_pv_domain(void)
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{
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return (xen_domain_type == XEN_PV_DOMAIN);
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}
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static inline int
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xen_hvm_domain(void)
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{
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return (xen_domain_type == XEN_HVM_DOMAIN);
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}
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static inline bool
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xen_initial_domain(void)
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{
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return (xen_domain() && (hvm_start_flags & SIF_INITDOMAIN) != 0);
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}
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#endif
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#include <machine/xen/xen-os.h>
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/* Everything below this point is not included by assembler (.S) files. */
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#ifndef __ASSEMBLY__
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/*
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* Based on ofed/include/linux/bitops.h
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*
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* Those helpers are prefixed by xen_ because xen-os.h is widely included
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* and we don't want the other drivers using them.
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*
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*/
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#define NBPL (NBBY * sizeof(long))
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static inline bool
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xen_test_bit(int bit, volatile long *addr)
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{
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unsigned long mask = 1UL << (bit % NBPL);
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return !!(atomic_load_acq_long(&addr[bit / NBPL]) & mask);
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}
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static inline void
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xen_set_bit(int bit, volatile long *addr)
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{
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atomic_set_long(&addr[bit / NBPL], 1UL << (bit % NBPL));
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}
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static inline void
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xen_clear_bit(int bit, volatile long *addr)
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{
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atomic_clear_long(&addr[bit / NBPL], 1UL << (bit % NBPL));
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}
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#undef NBPL
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/*
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* Functions to allocate/free unused memory in order
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* to map memory from other domains.
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*/
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struct resource *xenmem_alloc(device_t dev, int *res_id, size_t size);
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int xenmem_free(device_t dev, int res_id, struct resource *res);
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/* Debug/emergency function, prints directly to hypervisor console */
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void xc_printf(const char *, ...) __printflike(1, 2);
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#ifndef xen_mb
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#define xen_mb() mb()
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#endif
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#ifndef xen_rmb
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#define xen_rmb() rmb()
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#endif
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#ifndef xen_wmb
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#define xen_wmb() wmb()
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#endif
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#endif /* !__ASSEMBLY__ */
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#endif /* _XEN_XEN_OS_H_ */
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