arch/ia64/xen/hypercall.S

   1 /*
   2  * Support routines for Xen hypercalls
   3  *
   4  * Copyright (C) 2005 Dan Magenheimer <dan.magenheimer@hp.com>
   5  * Copyright (C) 2008 Yaozu (Eddie) Dong <eddie.dong@intel.com>
   6  */
   7
   8 #include <asm/asmmacro.h>
   9 #include <asm/intrinsics.h>
  10 #include <asm/xen/privop.h>
  11
  12 #ifdef __INTEL_COMPILER
  13 /*
  14  * Hypercalls without parameter.
  15  */
  16 #define __HCALL0(name,hcall)            \
  17         GLOBAL_ENTRY(name);             \
  18         break   hcall;                  \
  19         br.ret.sptk.many rp;            \
  20         END(name)
  21
  22 /*
  23  * Hypercalls with 1 parameter.
  24  */
  25 #define __HCALL1(name,hcall)            \
  26         GLOBAL_ENTRY(name);             \
  27         mov r8=r32;                     \
  28         break   hcall;                  \
  29         br.ret.sptk.many rp;            \
  30         END(name)
  31
  32 /*
  33  * Hypercalls with 2 parameters.
  34  */
  35 #define __HCALL2(name,hcall)            \
  36         GLOBAL_ENTRY(name);             \
  37         mov r8=r32;                     \
  38         mov r9=r33;                     \
  39         break   hcall;                  \
  40         br.ret.sptk.many rp;            \
  41         END(name)
  42
  43 __HCALL0(xen_get_psr, HYPERPRIVOP_GET_PSR)
  44 __HCALL0(xen_get_ivr, HYPERPRIVOP_GET_IVR)
  45 __HCALL0(xen_get_tpr, HYPERPRIVOP_GET_TPR)
  46 __HCALL0(xen_hyper_ssm_i, HYPERPRIVOP_SSM_I)
  47
  48 __HCALL1(xen_set_tpr, HYPERPRIVOP_SET_TPR)
  49 __HCALL1(xen_eoi, HYPERPRIVOP_EOI)
  50 __HCALL1(xen_thash, HYPERPRIVOP_THASH)
  51 __HCALL1(xen_set_itm, HYPERPRIVOP_SET_ITM)
  52 __HCALL1(xen_get_rr, HYPERPRIVOP_GET_RR)
  53 __HCALL1(xen_fc, HYPERPRIVOP_FC)
  54 __HCALL1(xen_get_cpuid, HYPERPRIVOP_GET_CPUID)
  55 __HCALL1(xen_get_pmd, HYPERPRIVOP_GET_PMD)
  56
  57 __HCALL2(xen_ptcga, HYPERPRIVOP_PTC_GA)
  58 __HCALL2(xen_set_rr, HYPERPRIVOP_SET_RR)
  59 __HCALL2(xen_set_kr, HYPERPRIVOP_SET_KR)
  60
  61 #ifdef CONFIG_IA32_SUPPORT
  62 __HCALL0(xen_get_eflag, HYPERPRIVOP_GET_EFLAG)
  63 __HCALL1(xen_set_eflag, HYPERPRIVOP_SET_EFLAG)  // refer SDM vol1 3.1.8
  64 #endif /* CONFIG_IA32_SUPPORT */
  65
  66 GLOBAL_ENTRY(xen_set_rr0_to_rr4)
  67         mov r8=r32
  68         mov r9=r33
  69         mov r10=r34
  70         mov r11=r35
  71         mov r14=r36
  72         XEN_HYPER_SET_RR0_TO_RR4
  73         br.ret.sptk.many rp
  74         ;;
  75 END(xen_set_rr0_to_rr4)
  76 #endif
  77
  78 GLOBAL_ENTRY(xen_send_ipi)
  79         mov r14=r32
  80         mov r15=r33
  81         mov r2=0x400
  82         break 0x1000
  83         ;;
  84         br.ret.sptk.many rp
  85         ;;
  86 END(xen_send_ipi)
  87
  88 GLOBAL_ENTRY(__hypercall)
  89         mov r2=r37
  90         break 0x1000
  91         br.ret.sptk.many b0
  92         ;;
  93 END(__hypercall)