patch-2.4.19 linux-2.4.19/arch/ppc64/kernel/pSeries_hvCall.S

• Lines: 71
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/ppc64/kernel/pSeries_hvCall.S
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/ppc64/kernel/pSeries_hvCall.S linux-2.4.19/arch/ppc64/kernel/pSeries_hvCall.S
@@ -0,0 +1,70 @@
+/*
+ * arch/ppc64/kernel/pSeries_hvCall.S
+ *
+ *
+ * This file contains the generic code to perform a call to the
+ * pSeries LPAR hypervisor.
+ * NOTE: this file will go away when we move to inline this work.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <linux/config.h>
+#include <linux/sys.h>
+#include <asm/unistd.h>
+#include <asm/errno.h>
+#include <asm/processor.h>
+#include <asm/page.h>
+#include <asm/cache.h>
+#include "ppc_asm.h"
+	
+/*
+ * hcall interface to pSeries LPAR
+ */
+#define HSC .long 0x44000022
+
+/* long plpar_hcall(unsigned long opcode,	 R3 
+		 unsigned long arg1,		 R4 
+		 unsigned long arg2,		 R5 
+		 unsigned long arg3,		 R6 
+		 unsigned long arg4,		 R7 
+		 unsigned long *out1,		 R8 
+		 unsigned long *out2,		 R9
+		 unsigned long *out3);		 R10
+ */
+
+	.text
+_GLOBAL(plpar_hcall)
+	mfcr	r0
+	std	r0,-8(r1)
+	stdu	r1,-32(r1)
+
+        std     r8,-8(r1)       /* Save out ptrs. */
+        std     r9,-16(r1)
+        std     r10,-24(r1)
+	
+	HSC                     /* invoke the hypervisor */
+
+        ld      r10,-8(r1)      /* Fetch r4-r7 ret args. */
+        std     r4,0(r10)
+        ld      r10,-16(r1)
+        std     r5,0(r10)
+        ld      r10,-24(r1)
+        std     r6,0(r10)
+
+	ld	r1,0(r1)
+	ld	r0,-8(r1)
+	mtcrf	0xff,r0
+	blr                     /* return r3 = status */
+
+
+/* Simple interface with no output values (other than status) */
+_GLOBAL(plpar_hcall_norets)
+	mfcr	r0
+	std	r0,-8(r1)
+	HSC                     /* invoke the hypervisor */
+	ld	r0,-8(r1)
+	mtcrf	0xff,r0
+	blr                     /* return r3 = status */