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..45e02bb64a92
--- /dev/null
+++ b/arch/ia64/xen/hypercall.S
@@ -0,0 +1,91 @@
+/*
+ * Support routines for Xen hypercalls
+ *
+ * Copyright (C) 2005 Dan Magenheimer <dan.magenheimer@hp.com>
+ * Copyright (C) 2008 Yaozu (Eddie) Dong <eddie.dong@intel.com>
+ */
+
+#include <asm/asmmacro.h>
+#include <asm/intrinsics.h>
+#include <asm/xen/privop.h>
+
+/*
+ * Hypercalls without parameter.
+ */
+#define __HCALL0(name,hcall)		\
+	GLOBAL_ENTRY(name);		\
+	break	hcall;			\
+	br.ret.sptk.many rp;		\
+	END(name)
+
+/*
+ * Hypercalls with 1 parameter.
+ */
+#define __HCALL1(name,hcall)		\
+	GLOBAL_ENTRY(name);		\
+	mov r8=r32;			\
+	break	hcall;			\
+	br.ret.sptk.many rp;		\
+	END(name)
+
+/*
+ * Hypercalls with 2 parameters.
+ */
+#define __HCALL2(name,hcall)		\
+	GLOBAL_ENTRY(name);		\
+	mov r8=r32;			\
+	mov r9=r33;			\
+	break	hcall;			\
+	br.ret.sptk.many rp;		\
+	END(name)
+
+__HCALL0(xen_get_psr, HYPERPRIVOP_GET_PSR)
+__HCALL0(xen_get_ivr, HYPERPRIVOP_GET_IVR)
+__HCALL0(xen_get_tpr, HYPERPRIVOP_GET_TPR)
+__HCALL0(xen_hyper_ssm_i, HYPERPRIVOP_SSM_I)
+
+__HCALL1(xen_set_tpr, HYPERPRIVOP_SET_TPR)
+__HCALL1(xen_eoi, HYPERPRIVOP_EOI)
+__HCALL1(xen_thash, HYPERPRIVOP_THASH)
+__HCALL1(xen_set_itm, HYPERPRIVOP_SET_ITM)
+__HCALL1(xen_get_rr, HYPERPRIVOP_GET_RR)
+__HCALL1(xen_fc, HYPERPRIVOP_FC)
+__HCALL1(xen_get_cpuid, HYPERPRIVOP_GET_CPUID)
+__HCALL1(xen_get_pmd, HYPERPRIVOP_GET_PMD)
+
+__HCALL2(xen_ptcga, HYPERPRIVOP_PTC_GA)
+__HCALL2(xen_set_rr, HYPERPRIVOP_SET_RR)
+__HCALL2(xen_set_kr, HYPERPRIVOP_SET_KR)
+
+#ifdef CONFIG_IA32_SUPPORT
+__HCALL0(xen_get_eflag, HYPERPRIVOP_GET_EFLAG)
+__HCALL1(xen_set_eflag, HYPERPRIVOP_SET_EFLAG)	// refer SDM vol1 3.1.8
+#endif /* CONFIG_IA32_SUPPORT */
+
+GLOBAL_ENTRY(xen_set_rr0_to_rr4)
+	mov r8=r32
+	mov r9=r33
+	mov r10=r34
+	mov r11=r35
+	mov r14=r36
+	XEN_HYPER_SET_RR0_TO_RR4
+	br.ret.sptk.many rp
+	;;
+END(xen_set_rr0_to_rr4)
+
+GLOBAL_ENTRY(xen_send_ipi)
+	mov r14=r32
+	mov r15=r33
+	mov r2=0x400
+	break 0x1000
+	;;
+	br.ret.sptk.many rp
+	;;
+END(xen_send_ipi)
+
+GLOBAL_ENTRY(__hypercall)
+	mov r2=r37
+	break 0x1000
+	br.ret.sptk.many b0
+	;;
+END(__hypercall)