--- /dev/null
+/******************************************************************************
+ * hypercall.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 __HYPERCALL_H__
+#define __HYPERCALL_H__
+
+#include <linux/string.h> /* memcpy() */
+
+#ifndef __HYPERVISOR_H__
+# error "please don't include this file directly"
+#endif
+
+/*
+ * Assembler stubs for hyper-calls.
+ */
+
+#define _hypercall0(type, name) \
+({ \
+ long __res; \
+ __asm__ __volatile__ (";;\n" \
+ "mov r2=%1\n" \
+ "break 0x1000 ;;\n" \
+ "mov %0=r8 ;;\n" \
+ : "=r" (__res) \
+ : "J" (__HYPERVISOR_##name) \
+ : "r2","r8", \
+ "memory" ); \
+ (type)__res; \
+})
+
+#define _hypercall1(type, name, a1) \
+({ \
+ long __res; \
+ __asm__ __volatile__ (";;\n" \
+ "mov r14=%2\n" \
+ "mov r2=%1\n" \
+ "break 0x1000 ;;\n" \
+ "mov %0=r8 ;;\n" \
+ : "=r" (__res) \
+ : "J" (__HYPERVISOR_##name), \
+ "rI" ((unsigned long)(a1)) \
+ : "r14","r2","r8", \
+ "memory" ); \
+ (type)__res; \
+})
+
+#define _hypercall2(type, name, a1, a2) \
+({ \
+ long __res; \
+ __asm__ __volatile__ (";;\n" \
+ "mov r14=%2\n" \
+ "mov r15=%3\n" \
+ "mov r2=%1\n" \
+ "break 0x1000 ;;\n" \
+ "mov %0=r8 ;;\n" \
+ : "=r" (__res) \
+ : "J" (__HYPERVISOR_##name), \
+ "rI" ((unsigned long)(a1)), \
+ "rI" ((unsigned long)(a2)) \
+ : "r14","r15","r2","r8", \
+ "memory" ); \
+ (type)__res; \
+})
+
+#define _hypercall3(type, name, a1, a2, a3) \
+({ \
+ long __res; \
+ __asm__ __volatile__ (";;\n" \
+ "mov r14=%2\n" \
+ "mov r15=%3\n" \
+ "mov r16=%4\n" \
+ "mov r2=%1\n" \
+ "break 0x1000 ;;\n" \
+ "mov %0=r8 ;;\n" \
+ : "=r" (__res) \
+ : "J" (__HYPERVISOR_##name), \
+ "rI" ((unsigned long)(a1)), \
+ "rI" ((unsigned long)(a2)), \
+ "rI" ((unsigned long)(a3)) \
+ : "r14","r15","r16","r2","r8", \
+ "memory" ); \
+ (type)__res; \
+})
+
+#define _hypercall4(type, name, a1, a2, a3, a4) \
+({ \
+ long __res; \
+ __asm__ __volatile__ (";;\n" \
+ "mov r14=%2\n" \
+ "mov r15=%3\n" \
+ "mov r16=%4\n" \
+ "mov r17=%5\n" \
+ "mov r2=%1\n" \
+ "break 0x1000 ;;\n" \
+ "mov %0=r8 ;;\n" \
+ : "=r" (__res) \
+ : "J" (__HYPERVISOR_##name), \
+ "rI" ((unsigned long)(a1)), \
+ "rI" ((unsigned long)(a2)), \
+ "rI" ((unsigned long)(a3)), \
+ "rI" ((unsigned long)(a4)) \
+ : "r14","r15","r16","r2","r8", \
+ "r17","memory" ); \
+ (type)__res; \
+})
+
+#define _hypercall5(type, name, a1, a2, a3, a4, a5) \
+({ \
+ long __res; \
+ __asm__ __volatile__ (";;\n" \
+ "mov r14=%2\n" \
+ "mov r15=%3\n" \
+ "mov r16=%4\n" \
+ "mov r17=%5\n" \
+ "mov r18=%6\n" \
+ "mov r2=%1\n" \
+ "break 0x1000 ;;\n" \
+ "mov %0=r8 ;;\n" \
+ : "=r" (__res) \
+ : "J" (__HYPERVISOR_##name), \
+ "rI" ((unsigned long)(a1)), \
+ "rI" ((unsigned long)(a2)), \
+ "rI" ((unsigned long)(a3)), \
+ "rI" ((unsigned long)(a4)), \
+ "rI" ((unsigned long)(a5)) \
+ : "r14","r15","r16","r2","r8", \
+ "r17","r18","memory" ); \
+ (type)__res; \
+})
+
+static inline int
+HYPERVISOR_sched_op_compat(
+ int cmd, unsigned long arg)
+{
+ return _hypercall2(int, sched_op_compat, cmd, arg);
+}
+
+static inline int
+HYPERVISOR_sched_op(
+ int cmd, void *arg)
+{
+ return _hypercall2(int, sched_op, cmd, arg);
+}
+
+static inline long
+HYPERVISOR_set_timer_op(
+ u64 timeout)
+{
+ unsigned long timeout_hi = (unsigned long)(timeout>>32);
+ unsigned long timeout_lo = (unsigned long)timeout;
+ return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi);
+}
+
+static inline int
+HYPERVISOR_dom0_op(
+ dom0_op_t *dom0_op)
+{
+ dom0_op->interface_version = DOM0_INTERFACE_VERSION;
+ return _hypercall1(int, dom0_op, dom0_op);
+}
+
+static inline int
+HYPERVISOR_multicall(
+ void *call_list, int nr_calls)
+{
+ return _hypercall2(int, multicall, call_list, nr_calls);
+}
+
+//XXX xen/ia64 copy_from_guest() is broken.
+// This is a temporal work around until it is fixed.
+static inline int
+____HYPERVISOR_memory_op(
+ unsigned int cmd, void *arg)
+{
+ return _hypercall2(int, memory_op, cmd, arg);
+}
+
+#include <xen/interface/memory.h>
+#ifdef CONFIG_VMX_GUEST
+# define ia64_xenmem_reservation_op(op, xmr) (0)
+#else
+int ia64_xenmem_reservation_op(unsigned long op,
+ struct xen_memory_reservation* reservation__);
+#endif
+static inline int
+HYPERVISOR_memory_op(
+ unsigned int cmd, void *arg)
+{
+ switch (cmd) {
+ case XENMEM_increase_reservation:
+ case XENMEM_decrease_reservation:
+ case XENMEM_populate_physmap:
+ return ia64_xenmem_reservation_op(cmd,
+ (struct xen_memory_reservation*)arg);
+ default:
+ return ____HYPERVISOR_memory_op(cmd, arg);
+ }
+ /* NOTREACHED */
+}
+
+static inline int
+HYPERVISOR_event_channel_op(
+ int cmd, void *arg)
+{
+ int rc = _hypercall2(int, event_channel_op, cmd, arg);
+ if (unlikely(rc == -ENOSYS)) {
+ struct evtchn_op op;
+ op.cmd = cmd;
+ memcpy(&op.u, arg, sizeof(op.u));
+ rc = _hypercall1(int, event_channel_op_compat, &op);
+ }
+ return rc;
+}
+
+static inline int
+HYPERVISOR_acm_op(
+ unsigned int cmd, void *arg)
+{
+ return _hypercall2(int, acm_op, cmd, arg);
+}
+
+static inline int
+HYPERVISOR_xen_version(
+ int cmd, void *arg)
+{
+ return _hypercall2(int, xen_version, cmd, arg);
+}
+
+static inline int
+HYPERVISOR_console_io(
+ int cmd, int count, char *str)
+{
+ return _hypercall3(int, console_io, cmd, count, str);
+}
+
+static inline int
+HYPERVISOR_physdev_op(
+ int cmd, void *arg)
+{
+ int rc = _hypercall2(int, physdev_op, cmd, arg);
+ if (unlikely(rc == -ENOSYS)) {
+ struct physdev_op op;
+ op.cmd = cmd;
+ memcpy(&op.u, arg, sizeof(op.u));
+ rc = _hypercall1(int, physdev_op_compat, &op);
+ }
+ return rc;
+}
+
+//XXX __HYPERVISOR_grant_table_op is used for this hypercall constant.
+static inline int
+____HYPERVISOR_grant_table_op(
+ unsigned int cmd, void *uop, unsigned int count,
+ unsigned long pa1, unsigned long pa2)
+{
+ return _hypercall5(int, grant_table_op, cmd, uop, count, pa1, pa2);
+}
+
+int HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count);
+
+static inline int
+HYPERVISOR_vcpu_op(
+ int cmd, int vcpuid, void *extra_args)
+{
+ return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args);
+}
+
+extern int HYPERVISOR_suspend(unsigned long srec);
+
+static inline unsigned long
+HYPERVISOR_hvm_op(
+ int cmd, void *arg)
+{
+ return _hypercall2(unsigned long, hvm_op, cmd, arg);
+}
+
+static inline int
+HYPERVISOR_callback_op(
+ int cmd, void *arg)
+{
+ return _hypercall2(int, callback_op, cmd, arg);
+}
+
+extern fastcall unsigned int __do_IRQ(unsigned int irq, struct pt_regs *regs);
+static inline void exit_idle(void) {}
+#define do_IRQ(irq, regs) ({ \
+ irq_enter(); \
+ __do_IRQ((irq), (regs)); \
+ irq_exit(); \
+})
+
+#include <linux/err.h>
+#ifdef CONFIG_XEN
+#include <asm/xen/privop.h>
+#endif /* CONFIG_XEN */
+
+static inline unsigned long
+__HYPERVISOR_ioremap(unsigned long ioaddr, unsigned long size)
+{
+ return _hypercall3(unsigned long, ia64_dom0vp_op,
+ IA64_DOM0VP_ioremap, ioaddr, size);
+}
+
+static inline unsigned long
+HYPERVISOR_ioremap(unsigned long ioaddr, unsigned long size)
+{
+ unsigned long ret = ioaddr;
+ if (is_running_on_xen()) {
+ ret = __HYPERVISOR_ioremap(ioaddr, size);
+ if (unlikely(ret == -ENOSYS))
+ panic("hypercall %s failed with %ld. "
+ "Please check Xen and Linux config mismatch\n",
+ __func__, -ret);
+ else if (unlikely(IS_ERR_VALUE(ret)))
+ ret = ioaddr;
+ }
+ return ret;
+}
+
+static inline unsigned long
+__HYPERVISOR_phystomach(unsigned long gpfn)
+{
+ return _hypercall2(unsigned long, ia64_dom0vp_op,
+ IA64_DOM0VP_phystomach, gpfn);
+}
+
+static inline unsigned long
+HYPERVISOR_phystomach(unsigned long gpfn)
+{
+ unsigned long ret = gpfn;
+ if (is_running_on_xen()) {
+ ret = __HYPERVISOR_phystomach(gpfn);
+ }
+ return ret;
+}
+
+static inline unsigned long
+__HYPERVISOR_machtophys(unsigned long mfn)
+{
+ return _hypercall2(unsigned long, ia64_dom0vp_op,
+ IA64_DOM0VP_machtophys, mfn);
+}
+
+static inline unsigned long
+HYPERVISOR_machtophys(unsigned long mfn)
+{
+ unsigned long ret = mfn;
+ if (is_running_on_xen()) {
+ ret = __HYPERVISOR_machtophys(mfn);
+ }
+ return ret;
+}
+
+static inline unsigned long
+__HYPERVISOR_zap_physmap(unsigned long gpfn, unsigned int extent_order)
+{
+ return _hypercall3(unsigned long, ia64_dom0vp_op,
+ IA64_DOM0VP_zap_physmap, gpfn, extent_order);
+}
+
+static inline unsigned long
+HYPERVISOR_zap_physmap(unsigned long gpfn, unsigned int extent_order)
+{
+ unsigned long ret = 0;
+ if (is_running_on_xen()) {
+ ret = __HYPERVISOR_zap_physmap(gpfn, extent_order);
+ }
+ return ret;
+}
+
+static inline unsigned long
+__HYPERVISOR_add_physmap(unsigned long gpfn, unsigned long mfn,
+ unsigned long flags, domid_t domid)
+{
+ return _hypercall5(unsigned long, ia64_dom0vp_op,
+ IA64_DOM0VP_add_physmap, gpfn, mfn, flags, domid);
+}
+
+static inline unsigned long
+HYPERVISOR_add_physmap(unsigned long gpfn, unsigned long mfn,
+ unsigned long flags, domid_t domid)
+{
+ unsigned long ret = 0;
+ BUG_ON(!is_running_on_xen());//XXX
+ if (is_running_on_xen()) {
+ ret = __HYPERVISOR_add_physmap(gpfn, mfn, flags, domid);
+ }
+ return ret;
+}
+
+// for balloon driver
+#define HYPERVISOR_update_va_mapping(va, new_val, flags) (0)
+
+#endif /* __HYPERCALL_H__ */
git://git.onelab.eu / linux-2.6.git / blobdiff