etrax-timer: Convert to MemoryRegion

Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

hw/etraxfs_timer.c

@@ -43,6 +43,7 @@
 
 struct etrax_timer {
     SysBusDevice busdev;
+    MemoryRegion mmio;
     qemu_irq irq;
     qemu_irq nmi;
 
@@ -72,7 +73,8 @@ struct etrax_timer {
     uint32_t r_masked_intr;
 };
 
-static uint32_t timer_readl (void *opaque, target_phys_addr_t addr)
+static uint64_t
+timer_read(void *opaque, target_phys_addr_t addr, unsigned int size)
 {
     struct etrax_timer *t = opaque;
     uint32_t r = 0;
@@ -239,9 +241,11 @@ static inline void timer_watchdog_update(struct etrax_timer *t, uint32_t value)
 }
 
 static void
-timer_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
+timer_write(void *opaque, target_phys_addr_t addr,
+            uint64_t val64, unsigned int size)
 {
     struct etrax_timer *t = opaque;
+    uint32_t value = val64;
 
     switch (addr)
     {
@@ -281,14 +285,14 @@ timer_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
     }
 }
 
-static CPUReadMemoryFunc * const timer_read[] = {
-    NULL, NULL,
-    &timer_readl,
-};
-
-static CPUWriteMemoryFunc * const timer_write[] = {
-    NULL, NULL,
-    &timer_writel,
+static const MemoryRegionOps timer_ops = {
+    .read = timer_read,
+    .write = timer_write,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+    .valid = {
+        .min_access_size = 4,
+        .max_access_size = 4
+    }
 };
 
 static void etraxfs_timer_reset(void *opaque)
@@ -307,7 +311,6 @@ static void etraxfs_timer_reset(void *opaque)
 static int etraxfs_timer_init(SysBusDevice *dev)
 {
     struct etrax_timer *t = FROM_SYSBUS(typeof (*t), dev);
-    int timer_regs;
 
     t->bh_t0 = qemu_bh_new(timer0_hit, t);
     t->bh_t1 = qemu_bh_new(timer1_hit, t);
@@ -319,10 +322,8 @@ static int etraxfs_timer_init(SysBusDevice *dev)
     sysbus_init_irq(dev, &t->irq);
     sysbus_init_irq(dev, &t->nmi);
 
-    timer_regs = cpu_register_io_memory(timer_read, timer_write, t,
-                                        DEVICE_NATIVE_ENDIAN);
-    sysbus_init_mmio(dev, 0x5c, timer_regs);
-
+    memory_region_init_io(&t->mmio, &timer_ops, t, "etraxfs-timer", 0x5c);
+    sysbus_init_mmio_region(dev, &t->mmio);
     qemu_register_reset(etraxfs_timer_reset, t);
     return 0;
 }