[Qemu-devel] [PATCH v17 5/6] pvpanic: create pvpanic device by default

[Hu Tao]

Also parse command line options for ioport and set
it accordingly.

Signed-off-by: Hu Tao <hu...@cn.fujitsu.com>
---
 hw/i386/pc_piix.c |  2 ++
 hw/i386/pc_q35.c  |  1 +
 hw/pc.h           |  4 ++++
 hw/pvpanic.c      | 42 ++++++++++++++++++++++++++++++++++++++++++
 vl.c              |  2 ++
 5 files changed, 51 insertions(+)

diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 0abc9f1..897254a 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -217,6 +217,8 @@ static void pc_init1(MemoryRegion *system_memory,
     if (pci_enabled) {
         pc_pci_device_init(pci_bus);
     }
+
+    pvpanic_init(isa_bus);
 }
 
 static void pc_init_pci(QEMUMachineInitArgs *args)
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 4f5f347..fd9ab01 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -204,6 +204,7 @@ static void pc_q35_init(QEMUMachineInitArgs *args)
     pc_vga_init(isa_bus, host_bus);
     audio_init(isa_bus, host_bus);
     pc_nic_init(isa_bus, host_bus);
+    pvpanic_init(isa_bus);
     if (pci_enabled) {
         pc_pci_device_init(host_bus);
     }
diff --git a/hw/pc.h b/hw/pc.h
index 8e1dd4c..1311037 100644
--- a/hw/pc.h
+++ b/hw/pc.h
@@ -178,6 +178,10 @@ static inline bool isa_ne2000_init(ISABus *bus, int base, 
int irq, NICInfo *nd)
 /* pc_sysfw.c */
 void pc_system_firmware_init(MemoryRegion *rom_memory);
 
+/* pvpanic.c */
+int pvpanic_init(ISABus *bus);
+int pvpanic_ioport(QemuOpts *opts, void *opaque);
+
 /* e820 types */
 #define E820_RAM        1
 #define E820_RESERVED   2
diff --git a/hw/pvpanic.c b/hw/pvpanic.c
index b3d10e2..2e237a4 100644
--- a/hw/pvpanic.c
+++ b/hw/pvpanic.c
@@ -19,6 +19,8 @@
 #include <sysemu/kvm.h>
 
 #include "hw/fw_cfg.h"
+#include "hw/pc.h"
+#include "qapi/string-input-visitor.h"
 
 /* The bit of supported pv event */
 #define PVPANIC_F_PANICKED      0
@@ -57,6 +59,36 @@ typedef struct PVPanicState {
     uint16_t ioport;
 } PVPanicState;
 
+static uint16_t ioport;
+
+static int set_ioport(const char *name, const char *value, void *opaque)
+{
+    StringInputVisitor *mi;
+
+    if (strcmp(name, "ioport") == 0) {
+        mi = string_input_visitor_new(value);
+        visit_type_uint16(string_input_get_visitor(mi), &ioport, "ioport",
+                          NULL);
+        string_input_visitor_cleanup(mi);
+    }
+
+    return 0;
+}
+
+int pvpanic_ioport(QemuOpts *opts, void *opaque)
+{
+    const char *driver;
+
+    driver = qemu_opt_get(opts, "driver");
+    if (!driver || strcmp(driver, "pvpanic")) {
+        return 0;
+    }
+
+    qemu_opt_foreach(opts, set_ioport, NULL, 0);
+
+    return 0;
+}
+
 /* return supported events on read */
 static uint64_t pvpanic_ioport_read(void *opaque, hwaddr addr, unsigned size)
 {
@@ -84,6 +116,10 @@ static int pvpanic_isa_initfn(ISADevice *dev)
     static bool port_configured;
     void *fw_cfg;
 
+    if (ioport) {
+        s->ioport = ioport;
+    }
+
     memory_region_init_io(&s->io, &pvpanic_ops, s, "pvpanic", 1);
     isa_register_ioport(dev, &s->io, s->ioport);
 
@@ -115,6 +151,12 @@ static void pvpanic_isa_class_init(ObjectClass *klass, 
void *data)
     dc->props = pvpanic_isa_properties;
 }
 
+int pvpanic_init(ISABus *bus)
+{
+    isa_create_simple(bus, TYPE_ISA_PVPANIC_DEVICE);
+    return 0;
+}
+
 static TypeInfo pvpanic_isa_info = {
     .name          = TYPE_ISA_PVPANIC_DEVICE,
     .parent        = TYPE_ISA_DEVICE,
diff --git a/vl.c b/vl.c
index c91fd4e..1a3ffa2 100644
--- a/vl.c
+++ b/vl.c
@@ -4302,6 +4302,8 @@ int main(int argc, char **argv, char **envp)
             exit (i == 1 ? 1 : 0);
     }
 
+    qemu_opts_foreach(qemu_find_opts("device"), pvpanic_ioport, NULL, 0);
+
     if (machine->compat_props) {
         qdev_prop_register_global_list(machine->compat_props);
     }
-- 
1.8.1.4