hypervisor-rtc

xen虚拟机源代码安装包

# HG changeset patch
# User [e-mail]
# Node ID 71e2a165aa7f81602c569430b18ba1ea705f0b70
# Parent  da66691687dfd90c55420cfdf27f55d18cca7810
[HVM] Move RTC emulation into the hypervisor.
Signed-off-by: Xiaowei Yang <[e-mail]>

Index: ioemu/Makefile.target
===================================================================
--- ioemu.orig/Makefile.target	2007-05-09 14:12:44.000000000 +0100
+++ ioemu/Makefile.target	2007-05-09 14:14:08.000000000 +0100
@@ -324,7 +324,11 @@
 endif
 
 # qemu-dm objects
+ifeq ($(ARCH),ia64)
 LIBOBJS=helper2.o exec-dm.o i8259-dm.o
+else
+LIBOBJS=helper2.o exec-dm.o i8259-dm.o rtc-dm.o
+endif
 
 all: $(PROGS)
 
@@ -386,7 +390,11 @@
 ifeq ($(TARGET_BASE_ARCH), i386)
 # Hardware support
 VL_OBJS+= ide.o pckbd.o ps2.o vga.o $(SOUND_HW) dma.o $(AUDIODRV)
+ifeq ($(ARCH),ia64)
 VL_OBJS+= fdc.o mc146818rtc.o serial.o pc.o
+else
+VL_OBJS+= fdc.o serial.o pc.o
+endif
 VL_OBJS+= cirrus_vga.o mixeng.o parallel.o acpi.o piix_pci.o
 VL_OBJS+= usb-uhci.o smbus_eeprom.o
 VL_OBJS+= piix4acpi.o
Index: ioemu/target-i386-dm/rtc-dm.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ ioemu/target-i386-dm/rtc-dm.c	2007-05-09 14:14:13.000000000 +0100
@@ -0,0 +1,124 @@
+/*
+ * QEMU MC146818 RTC emulation
+ * 
+ * Copyright (c) 2003-2004 Fabrice Bellard
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "vl.h"
+
+// #define DEBUG_CMOS
+
+struct RTCState {
+    uint8_t cmos_data[128];
+    uint8_t cmos_index;
+};
+
+static inline int to_bcd(RTCState *s, int a)
+{
+    return ((a / 10) << 4) | (a % 10);
+}
+
+void rtc_set_memory(RTCState *s, int addr, int val)
+{
+    if (addr >= 0 && addr <= 127)
+        s->cmos_data[addr] = val;
+}
+
+static void cmos_ioport_write(void *opaque, uint32_t addr, uint32_t data)
+{
+    RTCState *s = opaque;
+
+    if ((addr & 1) == 0) {
+        s->cmos_index = data & 0x7f;
+    } else {
+#ifdef DEBUG_CMOS
+        printf("cmos: write index=0x%02x val=0x%02x\n",
+               s->cmos_index, data);
+#endif        
+        s->cmos_data[s->cmos_index] = data;
+    }
+}
+
+static uint32_t cmos_ioport_read(void *opaque, uint32_t addr)
+{
+    RTCState *s = opaque;
+    int ret;
+    if ((addr & 1) == 0) {
+        return 0xff;
+    } else {
+        ret = s->cmos_data[s->cmos_index];
+#ifdef DEBUG_CMOS
+        printf("cmos: read index=0x%02x val=0x%02x\n",
+               s->cmos_index, ret);
+#endif
+        return ret;
+    }
+}
+
+static void rtc_save(QEMUFile *f, void *opaque)
+{
+    RTCState *s = opaque;
+
+    qemu_put_buffer(f, s->cmos_data, 128);
+    qemu_put_8s(f, &s->cmos_index);
+}
+
+static int rtc_load(QEMUFile *f, void *opaque, int version_id)
+{
+    RTCState *s = opaque;
+
+    if (version_id != 1)
+        return -EINVAL;
+
+    qemu_get_buffer(f, s->cmos_data, 128);
+    qemu_get_8s(f, &s->cmos_index);
+
+    return 0;
+}
+
+RTCState *rtc_init(int base, int irq)
+{
+    RTCState *s;
+    time_t ti;
+    struct tm *tm;
+    int val;
+
+    s = qemu_mallocz(sizeof(RTCState));
+    if (!s)
+        return NULL;
+
+/* PC cmos mappings */
+#define REG_IBM_CENTURY_BYTE        0x32
+#define REG_IBM_PS2_CENTURY_BYTE    0x37
+    time(&ti);
+    tm = gmtime(&ti);		/* XXX localtime and update from guest? */
+    val = to_bcd(s, (tm->tm_year / 100) + 19);
+    rtc_set_memory(s, REG_IBM_CENTURY_BYTE, val);
+    rtc_set_memory(s, REG_IBM_PS2_CENTURY_BYTE, val);
+
+    register_ioport_write(base, 2, 1, cmos_ioport_write, s);
+    register_ioport_read(base, 2, 1, cmos_ioport_read, s);
+
+    register_savevm("mc146818rtc", base, 1, rtc_save, rtc_load, s);
+    return s;
+}
+
+void rtc_set_date(RTCState *s, const struct tm *tm) {}