vt82c686: Move superio memory region to SuperIOConfig struct

The superio memory region holds the io space index/data registers used
to access the superio config registers that are implemented in struct
SuperIOConfig. To keep these related things together move the memory
region to SuperIOConfig and rename it accordingly.
Also remove the unused "data" member of SuperIOConfig which is not
needed as we store actual data values in the regs array.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <dc3c4e7632716ca73c10506bd02ee93b39c28705.1610223397.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

diff --git a/hw/isa/vt82c686.c b/hw/isa/vt82c686.c
index a6f5a0843d0c0e5a09b4ede1b353b208728972e1..30fe02f4c60a4b8865a10f7fd2a9304bc04ca48d 100644 (file)
--- a/hw/isa/vt82c686.c
+++ b/hw/isa/vt82c686.c
@@ -29,12 +29,11 @@
 typedef struct SuperIOConfig {
     uint8_t regs[0x100];
     uint8_t index;
-    uint8_t data;
+    MemoryRegion io;
 } SuperIOConfig;
 
 struct VT82C686BISAState {
     PCIDevice dev;
-    MemoryRegion superio;
     SuperIOConfig superio_cfg;
 };
 
@@ -128,8 +127,9 @@ static void vt82c686b_write_config(PCIDevice *d, uint32_t addr,
 
     trace_via_isa_write(addr, val, len);
     pci_default_write_config(d, addr, val, len);
-    if (addr == 0x85) {  /* enable or disable super IO configure */
-        memory_region_set_enabled(&s->superio, val & 0x2);
+    if (addr == 0x85) {
+        /* BIT(1): enable or disable superio config io ports */
+        memory_region_set_enabled(&s->superio_cfg.io, val & BIT(1));
     }
 }
 
@@ -311,15 +311,15 @@ static void vt82c686b_realize(PCIDevice *d, Error **errp)
         }
     }
 
-    memory_region_init_io(&s->superio, OBJECT(d), &superio_cfg_ops,
-                          &s->superio_cfg, "superio", 2);
-    memory_region_set_enabled(&s->superio, false);
+    memory_region_init_io(&s->superio_cfg.io, OBJECT(d), &superio_cfg_ops,
+                          &s->superio_cfg, "superio_cfg", 2);
+    memory_region_set_enabled(&s->superio_cfg.io, false);
     /*
      * The floppy also uses 0x3f0 and 0x3f1.
      * But we do not emulate a floppy, so just set it here.
      */
     memory_region_add_subregion(isa_bus->address_space_io, 0x3f0,
-                                &s->superio);
+                                &s->superio_cfg.io);
 }
 
 static void via_class_init(ObjectClass *klass, void *data)