--- /dev/null
+/******************************************************************************
+ * hypervisor.h
+ *
+ * Linux-specific hypervisor handling.
+ *
+ * Copyright (c) 2002-2004, K A Fraser
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation; or, when distributed
+ * separately from the Linux kernel or incorporated into other
+ * software packages, subject to the following license:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this source file (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.
+ */
+
+#ifndef __HYPERVISOR_H__
+#define __HYPERVISOR_H__
+
+#ifdef CONFIG_XEN
+extern int running_on_xen;
+#define is_running_on_xen() (running_on_xen)
+#else /* CONFIG_XEN */
+# ifdef CONFIG_VMX_GUEST
+# define is_running_on_xen() (1)
+# else /* CONFIG_VMX_GUEST */
+# define is_running_on_xen() (0)
+# define HYPERVISOR_ioremap(offset, size) (offset)
+# endif /* CONFIG_VMX_GUEST */
+#endif /* CONFIG_XEN */
+
+#if defined(CONFIG_XEN) || defined(CONFIG_VMX_GUEST)
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/errno.h>
+#include <xen/interface/xen.h>
+#include <xen/interface/dom0_ops.h>
+#include <xen/interface/event_channel.h>
+#include <xen/interface/physdev.h>
+#include <xen/interface/sched.h>
+#include <asm/hypercall.h>
+#include <asm/ptrace.h>
+#include <asm/page.h>
+
+extern shared_info_t *HYPERVISOR_shared_info;
+extern start_info_t *xen_start_info;
+
+void force_evtchn_callback(void);
+
+#ifndef CONFIG_VMX_GUEST
+/* Turn jiffies into Xen system time. XXX Implement me. */
+#define jiffies_to_st(j) 0
+
+static inline int
+HYPERVISOR_yield(
+ void)
+{
+ int rc = HYPERVISOR_sched_op(SCHEDOP_yield, NULL);
+
+ if (rc == -ENOSYS)
+ rc = HYPERVISOR_sched_op_compat(SCHEDOP_yield, 0);
+
+ return rc;
+}
+
+static inline int
+HYPERVISOR_block(
+ void)
+{
+ int rc = HYPERVISOR_sched_op(SCHEDOP_block, NULL);
+
+ if (rc == -ENOSYS)
+ rc = HYPERVISOR_sched_op_compat(SCHEDOP_block, 0);
+
+ return rc;
+}
+
+static inline int
+HYPERVISOR_shutdown(
+ unsigned int reason)
+{
+ struct sched_shutdown sched_shutdown = {
+ .reason = reason
+ };
+
+ int rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &sched_shutdown);
+
+ if (rc == -ENOSYS)
+ rc = HYPERVISOR_sched_op_compat(SCHEDOP_shutdown, reason);
+
+ return rc;
+}
+
+static inline int
+HYPERVISOR_poll(
+ evtchn_port_t *ports, unsigned int nr_ports, u64 timeout)
+{
+ struct sched_poll sched_poll = {
+ .nr_ports = nr_ports,
+ .timeout = jiffies_to_st(timeout)
+ };
+
+ int rc;
+
+ set_xen_guest_handle(sched_poll.ports, ports);
+ rc = HYPERVISOR_sched_op(SCHEDOP_poll, &sched_poll);
+ if (rc == -ENOSYS)
+ rc = HYPERVISOR_sched_op_compat(SCHEDOP_yield, 0);
+
+ return rc;
+}
+
+#include <asm/hypercall.h>
+
+// for drivers/xen/privcmd/privcmd.c
+#define machine_to_phys_mapping 0
+struct vm_area_struct;
+int direct_remap_pfn_range(struct vm_area_struct *vma,
+ unsigned long address,
+ unsigned long mfn,
+ unsigned long size,
+ pgprot_t prot,
+ domid_t domid);
+struct file;
+int privcmd_mmap(struct file * file, struct vm_area_struct * vma);
+#define HAVE_ARCH_PRIVCMD_MMAP
+
+// for drivers/xen/balloon/balloon.c
+#ifdef CONFIG_XEN_SCRUB_PAGES
+#define scrub_pages(_p,_n) memset((void *)(_p), 0, (_n) << PAGE_SHIFT)
+#else
+#define scrub_pages(_p,_n) ((void)0)
+#endif
+#define pte_mfn(_x) pte_pfn(_x)
+#define phys_to_machine_mapping_valid(_x) (1)
+
+#endif /* !CONFIG_VMX_GUEST */
+
+#define __pte_ma(_x) ((pte_t) {(_x)}) /* unmodified use */
+#define pfn_pte_ma(_x,_y) __pte_ma(0) /* unmodified use */
+
+#ifndef CONFIG_VMX_GUEST
+int __xen_create_contiguous_region(unsigned long vstart, unsigned int order, unsigned int address_bits);
+static inline int
+xen_create_contiguous_region(unsigned long vstart,
+ unsigned int order, unsigned int address_bits)
+{
+ int ret = 0;
+ if (is_running_on_xen()) {
+ ret = __xen_create_contiguous_region(vstart, order,
+ address_bits);
+ }
+ return ret;
+}
+
+void __xen_destroy_contiguous_region(unsigned long vstart, unsigned int order);
+static inline void
+xen_destroy_contiguous_region(unsigned long vstart, unsigned int order)
+{
+ if (is_running_on_xen())
+ __xen_destroy_contiguous_region(vstart, order);
+}
+
+#endif /* !CONFIG_VMX_GUEST */
+
+// for netfront.c, netback.c
+#define MULTI_UVMFLAGS_INDEX 0 //XXX any value
+
+static inline void
+MULTI_update_va_mapping(
+ multicall_entry_t *mcl, unsigned long va,
+ pte_t new_val, unsigned long flags)
+{
+ mcl->op = __HYPERVISOR_update_va_mapping;
+ mcl->result = 0;
+}
+
+static inline void
+MULTI_grant_table_op(multicall_entry_t *mcl, unsigned int cmd,
+ void *uop, unsigned int count)
+{
+ mcl->op = __HYPERVISOR_grant_table_op;
+ mcl->args[0] = cmd;
+ mcl->args[1] = (unsigned long)uop;
+ mcl->args[2] = count;
+}
+
+// for debug
+asmlinkage int xprintk(const char *fmt, ...);
+#define xprintd(fmt, ...) xprintk("%s:%d " fmt, __func__, __LINE__, \
+ ##__VA_ARGS__)
+
+#endif /* CONFIG_XEN || CONFIG_VMX_GUEST */
+
+#ifdef CONFIG_XEN_PRIVILEGED_GUEST
+#define is_initial_xendomain() (xen_start_info->flags & SIF_INITDOMAIN)
+#else
+#define is_initial_xendomain() 0
+#endif
+
+#endif /* __HYPERVISOR_H__ */
git://git.onelab.eu / linux-2.6.git / blobdiff