hw/misc/empty_slot: Name the slots when created

Directly set the slot name when creating the device,
to display the device name in trace events.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com>
Message-Id: <20200510152840.13558-8-f4bug@amsat.org>

hw/mips/malta.c

@@ -1241,7 +1241,7 @@ void mips_malta_init(MachineState *machine)
      * exception when accessing invalid memory. Create an empty slot to
      * emulate this feature.
      */
-    empty_slot_init(0, 0x20000000);
+    empty_slot_init("GT64120", 0, 0x20000000);
 
     qdev_init_nofail(dev);
 

hw/misc/empty_slot.c

@@ -50,7 +50,7 @@ static const MemoryRegionOps empty_slot_ops = {
     .endianness = DEVICE_NATIVE_ENDIAN,
 };
 
-void empty_slot_init(hwaddr addr, uint64_t slot_size)
+void empty_slot_init(const char *name, hwaddr addr, uint64_t slot_size)
 {
     if (slot_size > 0) {
         /* Only empty slots larger than 0 byte need handling. */

hw/sparc/sun4m.c

@@ -884,7 +884,8 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
 
     /* models without ECC don't trap when missing ram is accessed */
     if (!hwdef->ecc_base) {
-        empty_slot_init(machine->ram_size, hwdef->max_mem - machine->ram_size);
+        empty_slot_init("ecc", machine->ram_size,
+                        hwdef->max_mem - machine->ram_size);
     }
 
     prom_init(hwdef->slavio_base, bios_name);
@@ -915,7 +916,8 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
            Software shouldn't use aliased addresses, neither should it crash
            when does. Using empty_slot instead of aliasing can help with
            debugging such accesses */
-        empty_slot_init(hwdef->iommu_pad_base,hwdef->iommu_pad_len);
+        empty_slot_init("iommu.alias",
+                        hwdef->iommu_pad_base, hwdef->iommu_pad_len);
     }
 
     sparc32_dma_init(hwdef->dma_base,
@@ -964,7 +966,9 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
     for (i = 0; i < MAX_VSIMMS; i++) {
         /* vsimm registers probed by OBP */
         if (hwdef->vsimm[i].reg_base) {
-            empty_slot_init(hwdef->vsimm[i].reg_base, 0x2000);
+            char *name = g_strdup_printf("vsimm[%d]", i);
+            empty_slot_init(name, hwdef->vsimm[i].reg_base, 0x2000);
+            g_free(name);
         }
     }
 

include/hw/misc/empty_slot.h

@@ -14,6 +14,6 @@
 
 #include "exec/hwaddr.h"
 
-void empty_slot_init(hwaddr addr, uint64_t slot_size);
+void empty_slot_init(const char *name, hwaddr addr, uint64_t slot_size);
 
 #endif