include/asm-ia64/paravirt.h

   1 /******************************************************************************
   2  * include/asm-ia64/paravirt.h
   3  *
   4  * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
   5  *                    VA Linux Systems Japan K.K.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  */
  22
  23
  24 #ifndef __ASM_PARAVIRT_H
  25 #define __ASM_PARAVIRT_H
  26
  27 #ifdef CONFIG_PARAVIRT_GUEST
  28
  29 #define PARAVIRT_HYPERVISOR_TYPE_DEFAULT        0
  30 #define PARAVIRT_HYPERVISOR_TYPE_XEN            1
  31
  32 #ifndef __ASSEMBLY__
  33
  34 #include <asm/hw_irq.h>
  35 #include <asm/meminit.h>
  36
  37 /******************************************************************************
  38  * general info
  39  */
  40 struct pv_info {
  41         unsigned int kernel_rpl;
  42         int paravirt_enabled;
  43         const char *name;
  44 };
  45
  46 extern struct pv_info pv_info;
  47
  48 static inline int paravirt_enabled(void)
  49 {
  50         return pv_info.paravirt_enabled;
  51 }
  52
  53 static inline unsigned int get_kernel_rpl(void)
  54 {
  55         return pv_info.kernel_rpl;
  56 }
  57
  58 #endif /* !__ASSEMBLY__ */
  59
  60 #else
  61 /* fallback for native case */
  62
  63 #endif /* CONFIG_PARAVIRT_GUEST */
  64
  65 #endif /* __ASM_PARAVIRT_H */