#include "sysemu.h"
#include "sysbus.h"
#include "isa.h"
+#include "exec-memory.h"
//#define DEBUG_NVRAM
typedef struct M48t59SysBusState {
SysBusDevice busdev;
M48t59State state;
+ MemoryRegion io;
} M48t59SysBusState;
/* Fake timer functions */
}
/* IO access to NVRAM */
-static void NVRAM_writeb (void *opaque, uint32_t addr, uint32_t val)
+static void NVRAM_writeb(void *opaque, hwaddr addr, uint64_t val,
+ unsigned size)
{
M48t59State *NVRAM = opaque;
}
}
-static uint32_t NVRAM_readb (void *opaque, uint32_t addr)
+static uint64_t NVRAM_readb(void *opaque, hwaddr addr, unsigned size)
{
M48t59State *NVRAM = opaque;
uint32_t retval;
m48t59_reset_common(NVRAM);
}
-static const MemoryRegionPortio m48t59_portio[] = {
- {0, 4, 1, .read = NVRAM_readb, .write = NVRAM_writeb },
- PORTIO_END_OF_LIST(),
-};
-
static const MemoryRegionOps m48t59_io_ops = {
- .old_portio = m48t59_portio,
+ .read = NVRAM_readb,
+ .write = NVRAM_writeb,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 1,
+ },
+ .endianness = DEVICE_LITTLE_ENDIAN,
};
/* Initialisation routine */
d = FROM_SYSBUS(M48t59SysBusState, s);
state = &d->state;
sysbus_connect_irq(s, 0, IRQ);
+ memory_region_init_io(&d->io, &m48t59_io_ops, state, "m48t59", 4);
if (io_base != 0) {
- register_ioport_read(io_base, 0x04, 1, NVRAM_readb, state);
- register_ioport_write(io_base, 0x04, 1, NVRAM_writeb, state);
+ memory_region_add_subregion(get_system_io(), io_base, &d->io);
}
if (mem_base != 0) {
sysbus_mmio_map(s, 0, mem_base);