[Qemu-devel] [PATCH RFC for-2.3? 2/8] pc87312: Create isa-parallel in-place and add alias par0-chardev property

[Andreas Färber]

Move the parallel_hds[] code to the PReP machine.

Signed-off-by: Andreas Färber <afaer...@suse.de>
---
 hw/isa/pc87312.c         | 25 +++++++++++++++----------
 hw/ppc/prep.c            |  9 +++++++++
 include/hw/isa/pc87312.h |  5 ++---
 3 files changed, 26 insertions(+), 13 deletions(-)

diff --git a/hw/isa/pc87312.c b/hw/isa/pc87312.c
index 40a1106..ded6c01 100644
--- a/hw/isa/pc87312.c
+++ b/hw/isa/pc87312.c
@@ -268,6 +268,7 @@ static void pc87312_realize(DeviceState *dev, Error **errp)
     ISABus *bus;
     CharDriverState *chr;
     DriveInfo *drive;
+    Error *local_err = NULL;
     char name[5];
     int i;
 
@@ -278,20 +279,19 @@ static void pc87312_realize(DeviceState *dev, Error 
**errp)
     pc87312_hard_reset(s);
 
     if (is_parallel_enabled(s)) {
-        chr = parallel_hds[0];
-        if (chr == NULL) {
-            chr = qemu_chr_new("par0", "null", NULL);
-        }
-        isa = isa_create(bus, "isa-parallel");
-        d = DEVICE(isa);
-        qdev_prop_set_uint32(d, "index", 0);
+        d = DEVICE(&s->parallel);
+        qdev_set_parent_bus(d, BUS(bus));
         qdev_prop_set_uint32(d, "iobase", get_parallel_iobase(s));
         qdev_prop_set_uint32(d, "irq", get_parallel_irq(s));
-        qdev_prop_set_chr(d, "chardev", chr);
-        qdev_init_nofail(d);
-        s->parallel.dev = isa;
         trace_pc87312_info_parallel(get_parallel_iobase(s),
                                     get_parallel_irq(s));
+        object_property_set_bool(OBJECT(&s->parallel), true, "realized",
+                                 &local_err);
+        object_unref(OBJECT(&s->parallel));
+        if (local_err) {
+            error_propagate(errp, local_err);
+            return;
+        }
     }
 
     for (i = 0; i < 2; i++) {
@@ -351,6 +351,11 @@ static void pc87312_initfn(Object *obj)
     PC87312State *s = PC87312(obj);
 
     memory_region_init_io(&s->io, obj, &pc87312_io_ops, s, "pc87312", 2);
+
+    object_initialize(&s->parallel, sizeof(s->parallel), TYPE_ISA_PARALLEL);
+    object_property_add_alias(obj, "par0-chardev",
+                              OBJECT(&s->parallel), "chardev", &error_abort);
+    qdev_prop_set_uint32(DEVICE(&s->parallel), "index", 0);
 }
 
 static const VMStateDescription vmstate_pc87312 = {
diff --git a/hw/ppc/prep.c b/hw/ppc/prep.c
index 7f52662..1dfa051 100644
--- a/hw/ppc/prep.c
+++ b/hw/ppc/prep.c
@@ -40,6 +40,7 @@
 #include "hw/isa/pc87312.h"
 #include "sysemu/block-backend.h"
 #include "sysemu/arch_init.h"
+#include "sysemu/char.h"
 #include "sysemu/qtest.h"
 #include "exec/address-spaces.h"
 #include "elf.h"
@@ -528,6 +529,7 @@ static void ppc_prep_init(MachineState *machine)
     PCIDevice *pci;
     ISABus *isa_bus;
     ISADevice *isa;
+    CharDriverState *chr;
     qemu_irq *cpu_exit_irq;
     int ppc_boot_device;
     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
@@ -639,6 +641,13 @@ static void ppc_prep_init(MachineState *machine)
     /* Super I/O (parallel + serial ports) */
     isa = isa_create(isa_bus, TYPE_PC87312);
     dev = DEVICE(isa);
+    chr = parallel_hds[0];
+    if (chr == NULL) {
+        chr = qemu_chr_new("par0", "null", NULL);
+    }
+    if (chr != NULL) {
+        qdev_prop_set_chr(dev, "par0-chardev", chr);
+    }
     qdev_prop_set_uint8(dev, "config", 13); /* fdc, ser0, ser1, par0 */
     qdev_init_nofail(dev);
 
diff --git a/include/hw/isa/pc87312.h b/include/hw/isa/pc87312.h
index bf74470..b473b3b 100644
--- a/include/hw/isa/pc87312.h
+++ b/include/hw/isa/pc87312.h
@@ -26,6 +26,7 @@
 #define QEMU_PC87312_H
 
 #include "hw/isa/isa.h"
+#include "hw/char/parallel.h"
 
 
 #define TYPE_PC87312 "pc87312"
@@ -37,9 +38,7 @@ typedef struct PC87312State {
     uint32_t iobase;
     uint8_t config; /* initial configuration */
 
-    struct {
-        ISADevice *dev;
-    } parallel;
+    ISAParallelState parallel;
 
     struct {
         ISADevice *dev;
-- 
2.1.4