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-rw-r--r--arch/ia64/xen/hypercall.S91
1 files changed, 91 insertions, 0 deletions
diff --git a/arch/ia64/xen/hypercall.S b/arch/ia64/xen/hypercall.S
new file mode 100644
index 000000000000..d4ff0b9e79f1
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+++ b/arch/ia64/xen/hypercall.S
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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__HCALL1(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
65GLOBAL_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 ;;
74END(xen_set_rr0_to_rr4)
75
76GLOBAL_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 ;;
84END(xen_send_ipi)
85
86GLOBAL_ENTRY(__hypercall)
87 mov r2=r37
88 break 0x1000
89 br.ret.sptk.many b0
90 ;;
91END(__hypercall)