source: trunk/packages/xen-common/xen-common/tools/ioemu/patches/domain-timeoffset @ 34

Last change on this file since 34 was 34, checked in by hartmans, 18 years ago

Add xen and xen-common
File size: 8.2 KB
RevLine 
[34]1Index: ioemu/hw/mc146818rtc.c
2===================================================================
3--- ioemu.orig/hw/mc146818rtc.c 2007-05-03 15:38:35.000000000 +0100
4+++ ioemu/hw/mc146818rtc.c      2007-05-03 15:38:45.000000000 +0100
5@@ -178,10 +178,27 @@
6     }
7 }
8 
9+static void send_timeoffset_msg(time_t delta)
10+{
11+
12+/* This routine is used to inform another entity that the
13+   base time offset has changed. For instance, if you
14+   were using xenstore, you might want to write to the store
15+   at this point.  Or, you might use some other method.
16+   Whatever you might choose, here's a hook point to implement it.
17+
18+   One item of note is that this delta is in addition to
19+   any existing offset you might be already using. */
20+
21+    return;
22+}
23+
24 static void rtc_set_time(RTCState *s)
25 {
26     struct tm *tm = &s->current_tm;
27-
28+    time_t before, after;
29+   
30+    before = mktime(tm);
31     tm->tm_sec = from_bcd(s, s->cmos_data[RTC_SECONDS]);
32     tm->tm_min = from_bcd(s, s->cmos_data[RTC_MINUTES]);
33     tm->tm_hour = from_bcd(s, s->cmos_data[RTC_HOURS] & 0x7f);
34@@ -193,6 +210,12 @@
35     tm->tm_mday = from_bcd(s, s->cmos_data[RTC_DAY_OF_MONTH]);
36     tm->tm_mon = from_bcd(s, s->cmos_data[RTC_MONTH]) - 1;
37     tm->tm_year = from_bcd(s, s->cmos_data[RTC_YEAR]) + 100;
38+
39+    /* Compute, and send, the additional time delta
40+       We could compute the total time delta, but this is
41+       sufficient, and simple. */
42+    after = mktime(tm);
43+    send_timeoffset_msg(after-before);
44 }
45 
46 static void rtc_copy_date(RTCState *s)
47Index: ioemu/hw/pc.c
48===================================================================
49--- ioemu.orig/hw/pc.c  2007-05-03 15:38:44.000000000 +0100
50+++ ioemu/hw/pc.c       2007-05-03 15:38:45.000000000 +0100
51@@ -159,7 +159,7 @@
52 }
53 
54 /* hd_table must contain 4 block drivers */
55-static void cmos_init(uint64_t ram_size, int boot_device, BlockDriverState **hd_table)
56+static void cmos_init(uint64_t ram_size, int boot_device, BlockDriverState **hd_table, time_t timeoffset)
57 {
58     RTCState *s = rtc_state;
59     int val;
60@@ -170,6 +170,7 @@
61 
62     /* set the CMOS date */
63     time(&ti);
64+    ti += timeoffset;
65     if (rtc_utc)
66         tm = gmtime(&ti);
67     else
68@@ -619,7 +620,7 @@
69 static void pc_init1(uint64_t ram_size, int vga_ram_size, int boot_device,
70                      DisplayState *ds, const char **fd_filename, int snapshot,
71                      const char *kernel_filename, const char *kernel_cmdline,
72-                     const char *initrd_filename,
73+                     const char *initrd_filename, time_t timeoffset,
74                      int pci_enabled)
75 {
76 #ifndef NOBIOS
77@@ -871,7 +872,7 @@
78 
79     floppy_controller = fdctrl_init(6, 2, 0, 0x3f0, fd_table);
80 
81-    cmos_init(ram_size, boot_device, bs_table);
82+    cmos_init(ram_size, boot_device, bs_table, timeoffset);
83 
84     /* using PIIX4 acpi model */
85     if (pci_enabled && acpi_enabled)
86@@ -920,12 +921,13 @@
87                         int snapshot,
88                         const char *kernel_filename,
89                         const char *kernel_cmdline,
90-                        const char *initrd_filename)
91+                        const char *initrd_filename,
92+                        time_t timeoffset)
93 {
94     pc_init1(ram_size, vga_ram_size, boot_device,
95              ds, fd_filename, snapshot,
96              kernel_filename, kernel_cmdline,
97-             initrd_filename, 1);
98+             initrd_filename, timeoffset, 1);
99 }
100 
101 static void pc_init_isa(uint64_t ram_size, int vga_ram_size, int boot_device,
102@@ -933,12 +935,13 @@
103                         int snapshot,
104                         const char *kernel_filename,
105                         const char *kernel_cmdline,
106-                        const char *initrd_filename)
107+                        const char *initrd_filename,
108+                        time_t timeoffset)
109 {
110     pc_init1(ram_size, vga_ram_size, boot_device,
111              ds, fd_filename, snapshot,
112              kernel_filename, kernel_cmdline,
113-             initrd_filename, 0);
114+             initrd_filename, timeoffset, 0);
115 }
116 
117 QEMUMachine pc_machine = {
118Index: ioemu/vl.c
119===================================================================
120--- ioemu.orig/vl.c     2007-05-03 15:38:45.000000000 +0100
121+++ ioemu/vl.c  2007-05-03 15:38:45.000000000 +0100
122@@ -167,6 +167,8 @@
123 
124 int xc_handle;
125 
126+time_t timeoffset = 0;
127+
128 char domain_name[1024] = { 'H','V', 'M', 'X', 'E', 'N', '-'};
129 extern int domid;
130 
131@@ -5435,6 +5437,7 @@
132            "-vncviewer      start a vncviewer process for this domain\n"
133            "-vncunused      bind the VNC server to an unused port\n"
134            "-vnclisten      bind the VNC server to this address\n"
135+           "-timeoffset     time offset (in seconds) from local time\n"
136            "-acpi           disable or enable ACPI of HVM domain \n"
137            "\n"
138            "During emulation, the following keys are useful:\n"
139@@ -5522,6 +5525,7 @@
140 
141     QEMU_OPTION_d,
142     QEMU_OPTION_vcpus,
143+    QEMU_OPTION_timeoffset,
144     QEMU_OPTION_acpi,
145     QEMU_OPTION_vncviewer,
146     QEMU_OPTION_vncunused,
147@@ -5613,6 +5617,7 @@
148     
149     { "d", HAS_ARG, QEMU_OPTION_d },
150     { "vcpus", 1, QEMU_OPTION_vcpus },
151+    { "timeoffset", HAS_ARG, QEMU_OPTION_timeoffset },
152     { "acpi", 0, QEMU_OPTION_acpi },
153     { NULL },
154 };
155@@ -6377,6 +6382,9 @@
156                 vcpus = atoi(optarg);
157                 fprintf(logfile, "qemu: the number of cpus is %d\n", vcpus);
158                 break;
159+            case QEMU_OPTION_timeoffset:
160+                timeoffset = strtol(optarg, NULL, 0);
161+                break;
162             case QEMU_OPTION_acpi:
163                 acpi_enabled = 1;
164                 break;
165@@ -6531,6 +6539,9 @@
166     }
167     free(page_array);
168 #endif
169+
170+    timeoffset_get();
171+
172 #else  /* !CONFIG_DM */
173 
174     phys_ram_base = qemu_vmalloc(phys_ram_size);
175@@ -6662,7 +6673,8 @@
176 
177     machine->init(ram_size, vga_ram_size, boot_device,
178                   ds, fd_filename, snapshot,
179-                  kernel_filename, kernel_cmdline, initrd_filename);
180+                  kernel_filename, kernel_cmdline, initrd_filename,
181+                  timeoffset);
182 
183     /* init USB devices */
184     if (usb_enabled) {
185Index: ioemu/vl.h
186===================================================================
187--- ioemu.orig/vl.h     2007-05-03 15:38:45.000000000 +0100
188+++ ioemu/vl.h  2007-05-03 15:38:45.000000000 +0100
189@@ -581,7 +581,7 @@
190                                  int boot_device,
191              DisplayState *ds, const char **fd_filename, int snapshot,
192              const char *kernel_filename, const char *kernel_cmdline,
193-             const char *initrd_filename);
194+             const char *initrd_filename, time_t timeoffset);
195 
196 typedef struct QEMUMachine {
197     const char *name;
198@@ -1216,6 +1216,10 @@
199 int xenstore_vm_write(int domid, char *key, char *val);
200 char *xenstore_vm_read(int domid, char *key, int *len);
201 
202+/* helper2.c */
203+extern long time_offset;
204+void timeoffset_get(void);
205+
206 void kqemu_record_dump(void);
207 
208 extern char domain_name[];
209Index: ioemu/target-i386-dm/helper2.c
210===================================================================
211--- ioemu.orig/target-i386-dm/helper2.c 2007-05-03 15:38:44.000000000 +0100
212+++ ioemu/target-i386-dm/helper2.c      2007-05-03 15:38:45.000000000 +0100
213@@ -74,6 +74,8 @@
214 
215 int xc_handle;
216 
217+long time_offset = 0;
218+
219 shared_iopage_t *shared_page = NULL;
220 
221 /* the evtchn fd for polling */
222@@ -447,6 +449,34 @@
223     req->data = tmp1;
224 }
225 
226+void timeoffset_get()
227+{
228+    char *p;
229+
230+    p = xenstore_vm_read(domid, "rtc/timeoffset", NULL);
231+    if (!p)
232+       return;
233+
234+    if (sscanf(p, "%ld", &time_offset) == 1)
235+       fprintf(logfile, "Time offset set %ld\n", time_offset);
236+    else
237+       time_offset = 0;
238+
239+    xc_domain_set_time_offset(xc_handle, domid, time_offset);
240+
241+    free(p);
242+}
243+
244+void cpu_ioreq_timeoffset(CPUState *env, ioreq_t *req)
245+{
246+    char b[64];
247+
248+    time_offset += (ulong)req->data;
249+
250+    sprintf(b, "%ld", time_offset);
251+    xenstore_vm_write(domid, "rtc/timeoffset", b);
252+}
253+
254 void cpu_ioreq_xchg(CPUState *env, ioreq_t *req)
255 {
256     unsigned long tmp1;
257@@ -497,6 +527,9 @@
258         case IOREQ_TYPE_XCHG:
259             cpu_ioreq_xchg(env, req);
260             break;
261+       case IOREQ_TYPE_TIMEOFFSET:
262+            cpu_ioreq_timeoffset(env, req);
263+            break;
264         default:
265             hw_error("Invalid ioreq type 0x%x\n", req->type);
266         }
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