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 /*
  13  * Hypercalls without parameter.
  14  */
  15 #define __HCALL0(name,hcall)            \
  16         GLOBAL_ENTRY(name);             \
  17         break   hcall;                  \
  18         br.ret.sptk.many rp;            \
  19         END(name)
  20
  21 /*
  22  * Hypercalls with 1 parameter.
  23  */
  24 #define __HCALL1(name,hcall)            \
  25         GLOBAL_ENTRY(name);             \
  26         mov r8=r32;                     \
  27         break   hcall;                  \
  28         br.ret.sptk.many rp;            \
  29         END(name)
  30
  31 /*
  32  * Hypercalls with 2 parameters.
  33  */
  34 #define __HCALL2(name,hcall)            \
  35         GLOBAL_ENTRY(name);             \
  36         mov r8=r32;                     \
  37         mov r9=r33;                     \
  38         break   hcall;                  \
  39         br.ret.sptk.many rp;            \
  40         END(name)
  41
  42 __HCALL0(xen_get_psr, HYPERPRIVOP_GET_PSR)
  43 __HCALL0(xen_get_ivr, HYPERPRIVOP_GET_IVR)
  44 __HCALL0(xen_get_tpr, HYPERPRIVOP_GET_TPR)
  45 __HCALL0(xen_hyper_ssm_i, HYPERPRIVOP_SSM_I)
  46
  47 __HCALL1(xen_set_tpr, HYPERPRIVOP_SET_TPR)
  48 __HCALL1(xen_eoi, HYPERPRIVOP_EOI)
  49 __HCALL1(xen_thash, HYPERPRIVOP_THASH)
  50 __HCALL1(xen_set_itm, HYPERPRIVOP_SET_ITM)
  51 __HCALL1(xen_get_rr, HYPERPRIVOP_GET_RR)
  52 __HCALL1(xen_fc, HYPERPRIVOP_FC)
  53 __HCALL1(xen_get_cpuid, HYPERPRIVOP_GET_CPUID)
  54 __HCALL1(xen_get_pmd, HYPERPRIVOP_GET_PMD)
  55
  56 __HCALL2(xen_ptcga, HYPERPRIVOP_PTC_GA)
  57 __HCALL2(xen_set_rr, HYPERPRIVOP_SET_RR)
  58 __HCALL2(xen_set_kr, HYPERPRIVOP_SET_KR)
  59
  60 #ifdef CONFIG_IA32_SUPPORT
  61 __HCALL0(xen_get_eflag, HYPERPRIVOP_GET_EFLAG)
  62 __HCALL1(xen_set_eflag, HYPERPRIVOP_SET_EFLAG)  // refer SDM vol1 3.1.8
  63 #endif /* CONFIG_IA32_SUPPORT */
  64
  65 GLOBAL_ENTRY(xen_set_rr0_to_rr4)
  66         mov r8=r32
  67         mov r9=r33
  68         mov r10=r34
  69         mov r11=r35
  70         mov r14=r36
  71         XEN_HYPER_SET_RR0_TO_RR4
  72         br.ret.sptk.many rp
  73         ;;
  74 END(xen_set_rr0_to_rr4)
  75
  76 GLOBAL_ENTRY(xen_send_ipi)
  77         mov r14=r32
  78         mov r15=r33
  79         mov r2=0x400
  80         break 0x1000
  81         ;;
  82         br.ret.sptk.many rp
  83         ;;
  84 END(xen_send_ipi)
  85
  86 GLOBAL_ENTRY(__hypercall)
  87         mov r2=r37
  88         break 0x1000
  89         br.ret.sptk.many b0
  90         ;;
  91 END(__hypercall)