ed78016d00
Use an interface compatible with the Linux one so that the user-space libraries already using the Linux interface can be used without much modifications. This allows user-space to make use of the dm_op family of hypercalls, which are used by device models. Sponsored by: Citrix Systems R&D
102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
/******************************************************************************
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* hypervisor.h
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*
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* Linux-specific hypervisor handling.
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*
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* Copyright (c) 2002, K A Fraser
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*
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* $FreeBSD$
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*/
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#ifndef __XEN_HYPERVISOR_H__
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#define __XEN_HYPERVISOR_H__
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#include <sys/cdefs.h>
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#include <sys/systm.h>
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#include <xen/interface/xen.h>
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#include <xen/interface/platform.h>
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#include <xen/interface/event_channel.h>
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#include <xen/interface/physdev.h>
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#include <xen/interface/sched.h>
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#include <xen/interface/callback.h>
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#include <xen/interface/memory.h>
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#include <xen/interface/hvm/dm_op.h>
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#include <machine/xen/hypercall.h>
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extern uint64_t get_system_time(int ticks);
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static inline int
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HYPERVISOR_console_write(const char *str, int count)
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{
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return HYPERVISOR_console_io(CONSOLEIO_write, count, str);
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}
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static inline int
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HYPERVISOR_yield(void)
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{
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int rc = HYPERVISOR_sched_op(SCHEDOP_yield, NULL);
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#if CONFIG_XEN_COMPAT <= 0x030002
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if (rc == -ENOXENSYS)
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rc = HYPERVISOR_sched_op_compat(SCHEDOP_yield, 0);
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#endif
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return (rc);
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}
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static inline int
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HYPERVISOR_block(
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void)
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{
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int rc = HYPERVISOR_sched_op(SCHEDOP_block, NULL);
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#if CONFIG_XEN_COMPAT <= 0x030002
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if (rc == -ENOXENSYS)
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rc = HYPERVISOR_sched_op_compat(SCHEDOP_block, 0);
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#endif
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return (rc);
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}
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static inline void
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HYPERVISOR_shutdown(unsigned int reason)
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{
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struct sched_shutdown sched_shutdown = {
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.reason = reason
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};
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HYPERVISOR_sched_op(SCHEDOP_shutdown, &sched_shutdown);
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#if CONFIG_XEN_COMPAT <= 0x030002
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HYPERVISOR_sched_op_compat(SCHEDOP_shutdown, reason);
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#endif
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}
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static inline void
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HYPERVISOR_crash(void)
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{
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HYPERVISOR_shutdown(SHUTDOWN_crash);
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/* NEVER REACHED */
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for (;;) ; /* eliminate noreturn error */
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}
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/* Transfer control to hypervisor until an event is detected on one */
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/* of the specified ports or the specified number of ticks elapse */
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static inline int
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HYPERVISOR_poll(
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evtchn_port_t *ports, unsigned int nr_ports, int ticks)
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{
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int rc;
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struct sched_poll sched_poll = {
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.nr_ports = nr_ports,
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.timeout = get_system_time(ticks)
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};
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set_xen_guest_handle(sched_poll.ports, ports);
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rc = HYPERVISOR_sched_op(SCHEDOP_poll, &sched_poll);
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#if CONFIG_XEN_COMPAT <= 0x030002
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if (rc == -ENOXENSYS)
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rc = HYPERVISOR_sched_op_compat(SCHEDOP_yield, 0);
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#endif
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return (rc);
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}
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#endif /* __XEN_HYPERVISOR_H__ */
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