pv-on-hvm-ioemu/ioemu-fixed-port-unplug

diff --git a/hw/xen_platform.c b/hw/xen_platform.c
index 38eec0bb531acf0f3f860188d9fa48331db210cc..83e9a49df53c685e472e266c4dc8888b1670b005 100644 (file)
--- a/hw/xen_platform.c
+++ b/hw/xen_platform.c
@@ -26,11 +26,13 @@
 #include "hw.h"
 #include "pci.h"
 #include "irq.h"
+#include "exec-all.h"
 #include "qemu-xen.h"
 
 #include <xenguest.h>
 
-extern FILE *logfile;
+static char log_buffer[4096];
+static int log_buffer_off;
 
 #define PFFLAG_ROM_LOCK 1 /* Sets whether ROM memory area is RW or RO */
 
@@ -70,8 +72,6 @@ static void xen_platform_ioport_writeb(void *opaque, uint32_t addr, uint32_t val
     }
     case 8:
         {
-            static char log_buffer[4096];
-            static int log_buffer_off;
             if (val == '\n' || log_buffer_off == sizeof(log_buffer) - 1) {
                 /* Flush buffer */
                 log_buffer[log_buffer_off] = 0;
@@ -234,6 +234,62 @@ int xen_pci_load(QEMUFile *f, void *opaque, int version_id)
     return 0;
 }
 
+static void platform_fixed_ioport_write2(void *opaque, uint32_t addr, uint32_t val)
+{
+    switch (addr - 0x10) {
+    case 0:
+        /* Unplug devices.  Value is a bitmask of which devices to
+           unplug, with bit 0 the IDE devices and bit 1 the network
+           devices.  The other 14 are reserved. */
+        if (val & 1)
+            ide_unplug_harddisks();
+        if (val & 2) {
+            pci_unplug_netifs();
+            net_tap_shutdown_all();
+        }
+        break;
+    }
+}
+
+static uint32_t platform_fixed_ioport_read2(void *opaque, uint32_t addr)
+{
+    switch (addr - 0x10) {
+    case 0:
+        return 0x49d2; /* Magic value so that you can identify the
+                          interface. */
+    default:
+        return 0xffff;
+    }
+}
+
+static void platform_fixed_ioport_write1(void *opaque, uint32_t addr, uint32_t val)
+{
+    switch (addr - 0x10) {
+    case 2:
+        /* Send bytes to syslog */
+        if (val == '\n' || log_buffer_off == sizeof(log_buffer) - 1) {
+            /* Flush buffer */
+            log_buffer[log_buffer_off] = 0;
+            fprintf(logfile, "%s\n", log_buffer);
+            log_buffer_off = 0;
+            break;
+        }
+        log_buffer[log_buffer_off++] = val;
+        break;
+    }
+}
+
+static uint32_t platform_fixed_ioport_read1(void *opaque, uint32_t addr)
+{
+    switch (addr - 0x10) {
+    case 2:
+        /* Version number */
+        return 0;
+    default:
+        return 0xff;
+    }
+}
+
 void pci_xen_platform_init(PCIBus *bus)
 {
     PCIXenPlatformState *d;
@@ -269,4 +325,8 @@ void pci_xen_platform_init(PCIBus *bus)
 
     register_savevm("platform", 0, 2, xen_pci_save, xen_pci_load, d);
     printf("Done register platform.\n");
+    register_ioport_write(0x10, 16, 2, platform_fixed_ioport_write2, NULL);
+    register_ioport_write(0x10, 16, 1, platform_fixed_ioport_write1, NULL);
+    register_ioport_read(0x10, 16, 2, platform_fixed_ioport_read2, NULL);
+    register_ioport_read(0x10, 16, 1, platform_fixed_ioport_read1, NULL);
 }