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[Qemu-devel] [PATCH v19 4/7] pvpanic: pass configurable ioport to seabio


From: Hu Tao
Subject: [Qemu-devel] [PATCH v19 4/7] pvpanic: pass configurable ioport to seabios
Date: Thu, 18 Apr 2013 10:14:43 +0800

This lets seabios patch the corresponding SSDT entry.

Signed-off-by: Hu Tao <address@hidden>
---
 hw/misc/pvpanic.c         | 14 ++++++++++++++
 hw/nvram/fw_cfg.c         |  8 +++++++-
 include/hw/nvram/fw_cfg.h |  2 ++
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/hw/misc/pvpanic.c b/hw/misc/pvpanic.c
index c3adcdf..23599a3 100644
--- a/hw/misc/pvpanic.c
+++ b/hw/misc/pvpanic.c
@@ -18,6 +18,8 @@
 #include <sysemu/sysemu.h>
 #include <sysemu/kvm.h>
 
+#include "hw/nvram/fw_cfg.h"
+
 /* The bit of supported pv event */
 #define PVPANIC_F_PANICKED      0
 
@@ -86,10 +88,22 @@ static const MemoryRegionOps pvpanic_ops = {
 static int pvpanic_isa_initfn(ISADevice *dev)
 {
     PVPanicState *s = ISA_PVPANIC_DEVICE(dev);
+    static bool port_configured;
+    void *fw_cfg;
 
     memory_region_init_io(&s->io, &pvpanic_ops, s, "pvpanic", 1);
     isa_register_ioport(dev, &s->io, s->ioport);
 
+    if (!port_configured) {
+        fw_cfg = object_resolve_path("/machine/fw_cfg", NULL);
+        if (fw_cfg) {
+            fw_cfg_add_file(fw_cfg, "etc/pvpanic-port",
+                            g_memdup(&s->ioport, sizeof(s->ioport)),
+                            sizeof(s->ioport));
+            port_configured = true;
+        }
+    }
+
     return 0;
 }
 
diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
index 97bba87..1a7e49c 100644
--- a/hw/nvram/fw_cfg.c
+++ b/hw/nvram/fw_cfg.c
@@ -489,11 +489,17 @@ FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t 
data_port,
     dev = qdev_create(NULL, "fw_cfg");
     qdev_prop_set_uint32(dev, "ctl_iobase", ctl_port);
     qdev_prop_set_uint32(dev, "data_iobase", data_port);
-    qdev_init_nofail(dev);
     d = SYS_BUS_DEVICE(dev);
 
     s = DO_UPCAST(FWCfgState, busdev.qdev, dev);
 
+    if (!object_resolve_path("/machine/fw_cfg", NULL)) {
+        object_property_add_child(qdev_get_machine(), "fw_cfg", OBJECT(s),
+                                  NULL);
+    }
+
+    qdev_init_nofail(dev);
+
     if (ctl_addr) {
         sysbus_mmio_map(d, 0, ctl_addr);
     }
diff --git a/include/hw/nvram/fw_cfg.h b/include/hw/nvram/fw_cfg.h
index 05c8df1..07cc941 100644
--- a/include/hw/nvram/fw_cfg.h
+++ b/include/hw/nvram/fw_cfg.h
@@ -1,6 +1,8 @@
 #ifndef FW_CFG_H
 #define FW_CFG_H
 
+#include "exec/hwaddr.h"
+
 #define FW_CFG_SIGNATURE        0x00
 #define FW_CFG_ID               0x01
 #define FW_CFG_UUID             0x02
-- 
1.8.1.4




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