driver: ioremap the hypervisor firmware to any kernel address

[jailhouse.git] / hypervisor / arch / arm / include / asm / jailhouse_hypercall.h

diff --git a/hypervisor/arch/arm/include/asm/jailhouse_hypercall.h b/hypervisor/arch/arm/include/asm/jailhouse_hypercall.h
index 1fdac5543c9b717366213abcc8dffd0ff06d1667..45e7a3d9ceaecc1d454bc6c1108381adf4ba6b3e 100644 (file)
--- a/hypervisor/arch/arm/include/asm/jailhouse_hypercall.h
+++ b/hypervisor/arch/arm/include/asm/jailhouse_hypercall.h
@@ -1,35 +1,67 @@
 /*
  * Jailhouse, a Linux-based partitioning hypervisor
  *
- * Copyright (c) Siemens AG, 2013
+ * Copyright (c) Siemens AG, 2013-2015
  *
  * Authors:
  *  Jan Kiszka <jan.kiszka@siemens.com>
  *
  * This work is licensed under the terms of the GNU GPL, version 2.  See
  * the COPYING file in the top-level directory.
+ *
+ * Alternatively, you can use or redistribute this file under the following
+ * BSD license:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #define JAILHOUSE_BASE                 0xf0000000
+#define JAILHOUSE_BORROW_ROOT_PT       1
 
 #define JAILHOUSE_CALL_INS             ".arch_extension virt\n\t" \
                                        "hvc #0x4a48"
 #define JAILHOUSE_CALL_NUM_RESULT      "r0"
-#define JAILHOUSE_CALL_ARG             "r1"
+#define JAILHOUSE_CALL_ARG1            "r1"
+#define JAILHOUSE_CALL_ARG2            "r2"
 
-#ifndef __asmeq
-#define __asmeq(x, y)  ".ifnc " x "," y " ; .err ; .endif\n\t"
-#endif
+/* CPU statistics */
+#define JAILHOUSE_CPU_STAT_VMEXITS_MAINTENANCE JAILHOUSE_GENERIC_CPU_STATS
+#define JAILHOUSE_CPU_STAT_VMEXITS_VIRQ                JAILHOUSE_GENERIC_CPU_STATS + 1
+#define JAILHOUSE_CPU_STAT_VMEXITS_VSGI                JAILHOUSE_GENERIC_CPU_STATS + 2
+#define JAILHOUSE_NUM_CPU_STATS                        JAILHOUSE_GENERIC_CPU_STATS + 3
 
 #ifndef __ASSEMBLY__
 
+struct jailhouse_comm_region {
+       COMM_REGION_GENERIC_HEADER;
+};
+
 static inline __u32 jailhouse_call(__u32 num)
 {
        register __u32 num_result asm(JAILHOUSE_CALL_NUM_RESULT) = num;
 
        asm volatile(
-               __asmeq(JAILHOUSE_CALL_NUM_RESULT, "%0")
-               __asmeq(JAILHOUSE_CALL_NUM_RESULT, "%1")
                JAILHOUSE_CALL_INS
                : "=r" (num_result)
                : "r" (num_result)
@@ -37,18 +69,29 @@ static inline __u32 jailhouse_call(__u32 num)
        return num_result;
 }
 
-static inline __u32 jailhouse_call_arg(__u32 num, __u32 arg)
+static inline __u32 jailhouse_call_arg1(__u32 num, __u32 arg1)
+{
+       register __u32 num_result asm(JAILHOUSE_CALL_NUM_RESULT) = num;
+       register __u32 __arg1 asm(JAILHOUSE_CALL_ARG1) = arg1;
+
+       asm volatile(
+               JAILHOUSE_CALL_INS
+               : "=r" (num_result)
+               : "r" (num_result), "r" (__arg1)
+               : "memory");
+       return num_result;
+}
+
+static inline __u32 jailhouse_call_arg2(__u32 num, __u32 arg1, __u32 arg2)
 {
        register __u32 num_result asm(JAILHOUSE_CALL_NUM_RESULT) = num;
-       register __u32 __arg asm(JAILHOUSE_CALL_ARG) = arg;
+       register __u32 __arg1 asm(JAILHOUSE_CALL_ARG1) = arg1;
+       register __u32 __arg2 asm(JAILHOUSE_CALL_ARG2) = arg2;
 
        asm volatile(
-               __asmeq(JAILHOUSE_CALL_NUM_RESULT, "%0")
-               __asmeq(JAILHOUSE_CALL_NUM_RESULT, "%1")
-               __asmeq(JAILHOUSE_CALL_ARG, "%2")
                JAILHOUSE_CALL_INS
                : "=r" (num_result)
-               : "r" (num_result), "r" (__arg)
+               : "r" (num_result), "r" (__arg1), "r" (__arg2)
                : "memory");
        return num_result;
 }