mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-30 00:06:46 +07:00
92 lines
1.9 KiB
ArmAsm
92 lines
1.9 KiB
ArmAsm
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/*
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* Support routines for Xen hypercalls
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*
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* Copyright (C) 2005 Dan Magenheimer <dan.magenheimer@hp.com>
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* Copyright (C) 2008 Yaozu (Eddie) Dong <eddie.dong@intel.com>
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*/
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#include <asm/asmmacro.h>
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#include <asm/intrinsics.h>
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#include <asm/xen/privop.h>
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/*
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* Hypercalls without parameter.
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*/
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#define __HCALL0(name,hcall) \
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GLOBAL_ENTRY(name); \
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break hcall; \
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br.ret.sptk.many rp; \
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END(name)
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/*
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* Hypercalls with 1 parameter.
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*/
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#define __HCALL1(name,hcall) \
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GLOBAL_ENTRY(name); \
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mov r8=r32; \
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break hcall; \
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br.ret.sptk.many rp; \
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END(name)
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/*
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* Hypercalls with 2 parameters.
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*/
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#define __HCALL2(name,hcall) \
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GLOBAL_ENTRY(name); \
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mov r8=r32; \
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mov r9=r33; \
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break hcall; \
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br.ret.sptk.many rp; \
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END(name)
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__HCALL0(xen_get_psr, HYPERPRIVOP_GET_PSR)
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__HCALL0(xen_get_ivr, HYPERPRIVOP_GET_IVR)
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__HCALL0(xen_get_tpr, HYPERPRIVOP_GET_TPR)
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__HCALL0(xen_hyper_ssm_i, HYPERPRIVOP_SSM_I)
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__HCALL1(xen_set_tpr, HYPERPRIVOP_SET_TPR)
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__HCALL1(xen_eoi, HYPERPRIVOP_EOI)
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__HCALL1(xen_thash, HYPERPRIVOP_THASH)
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__HCALL1(xen_set_itm, HYPERPRIVOP_SET_ITM)
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__HCALL1(xen_get_rr, HYPERPRIVOP_GET_RR)
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__HCALL1(xen_fc, HYPERPRIVOP_FC)
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__HCALL1(xen_get_cpuid, HYPERPRIVOP_GET_CPUID)
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__HCALL1(xen_get_pmd, HYPERPRIVOP_GET_PMD)
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__HCALL2(xen_ptcga, HYPERPRIVOP_PTC_GA)
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__HCALL2(xen_set_rr, HYPERPRIVOP_SET_RR)
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__HCALL2(xen_set_kr, HYPERPRIVOP_SET_KR)
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#ifdef CONFIG_IA32_SUPPORT
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__HCALL1(xen_get_eflag, HYPERPRIVOP_GET_EFLAG)
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__HCALL1(xen_set_eflag, HYPERPRIVOP_SET_EFLAG) // refer SDM vol1 3.1.8
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#endif /* CONFIG_IA32_SUPPORT */
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GLOBAL_ENTRY(xen_set_rr0_to_rr4)
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mov r8=r32
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mov r9=r33
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mov r10=r34
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mov r11=r35
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mov r14=r36
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XEN_HYPER_SET_RR0_TO_RR4
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br.ret.sptk.many rp
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;;
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END(xen_set_rr0_to_rr4)
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GLOBAL_ENTRY(xen_send_ipi)
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mov r14=r32
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mov r15=r33
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mov r2=0x400
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break 0x1000
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;;
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br.ret.sptk.many rp
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;;
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END(xen_send_ipi)
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GLOBAL_ENTRY(__hypercall)
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mov r2=r37
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break 0x1000
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br.ret.sptk.many b0
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;;
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END(__hypercall)
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