/*
* QEMU JAZZ LED emulator.
*
- * Copyright (c) 2007 Hervé Poussineau
+ * Copyright (c) 2007-2012 Herve Poussineau
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* THE SOFTWARE.
*/
-#include "hw.h"
-#include "mips.h"
#include "console.h"
#include "pixel_ops.h"
-
-//#define DEBUG_LED
-
-#ifdef DEBUG_LED
-#define DPRINTF(fmt, ...) \
-do { printf("jazz led: " fmt , ## __VA_ARGS__); } while (0)
-#else
-#define DPRINTF(fmt, ...) do {} while (0)
-#endif
-#define BADF(fmt, ...) \
-do { fprintf(stderr, "jazz led ERROR: " fmt , ## __VA_ARGS__);} while (0)
+#include "trace.h"
+#include "sysbus.h"
typedef enum {
REDRAW_NONE = 0, REDRAW_SEGMENTS = 1, REDRAW_BACKGROUND = 2,
} screen_state_t;
typedef struct LedState {
+ SysBusDevice busdev;
+ MemoryRegion iomem;
uint8_t segments;
DisplayState *ds;
screen_state_t state;
} LedState;
-static uint32_t led_readb(void *opaque, target_phys_addr_t addr)
+static uint64_t jazz_led_read(void *opaque, target_phys_addr_t addr,
+ unsigned int size)
{
LedState *s = opaque;
- uint32_t val;
-
- switch (addr) {
- case 0:
- val = s->segments;
- break;
- default:
- BADF("invalid read at [" TARGET_FMT_plx "]\n", addr);
- val = 0;
- }
+ uint8_t val;
- DPRINTF("read addr=" TARGET_FMT_plx " val=0x%02x\n", addr, val);
+ val = s->segments;
+ trace_jazz_led_read(addr, val);
return val;
}
-static uint32_t led_readw(void *opaque, target_phys_addr_t addr)
-{
- uint32_t v;
-#ifdef TARGET_WORDS_BIGENDIAN
- v = led_readb(opaque, addr) << 8;
- v |= led_readb(opaque, addr + 1);
-#else
- v = led_readb(opaque, addr);
- v |= led_readb(opaque, addr + 1) << 8;
-#endif
- return v;
-}
-
-static uint32_t led_readl(void *opaque, target_phys_addr_t addr)
-{
- uint32_t v;
-#ifdef TARGET_WORDS_BIGENDIAN
- v = led_readb(opaque, addr) << 24;
- v |= led_readb(opaque, addr + 1) << 16;
- v |= led_readb(opaque, addr + 2) << 8;
- v |= led_readb(opaque, addr + 3);
-#else
- v = led_readb(opaque, addr);
- v |= led_readb(opaque, addr + 1) << 8;
- v |= led_readb(opaque, addr + 2) << 16;
- v |= led_readb(opaque, addr + 3) << 24;
-#endif
- return v;
-}
-
-static void led_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
+static void jazz_led_write(void *opaque, target_phys_addr_t addr,
+ uint64_t val, unsigned int size)
{
LedState *s = opaque;
+ uint8_t new_val = val & 0xff;
- DPRINTF("write addr=" TARGET_FMT_plx " val=0x%02x\n", addr, val);
-
- switch (addr) {
- case 0:
- s->segments = val;
- s->state |= REDRAW_SEGMENTS;
- break;
- default:
- BADF("invalid write of 0x%08x at [" TARGET_FMT_plx "]\n", val, addr);
- break;
- }
-}
-
-static void led_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
-{
-#ifdef TARGET_WORDS_BIGENDIAN
- led_writeb(opaque, addr, (val >> 8) & 0xff);
- led_writeb(opaque, addr + 1, val & 0xff);
-#else
- led_writeb(opaque, addr, val & 0xff);
- led_writeb(opaque, addr + 1, (val >> 8) & 0xff);
-#endif
-}
+ trace_jazz_led_write(addr, new_val);
-static void led_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
-{
-#ifdef TARGET_WORDS_BIGENDIAN
- led_writeb(opaque, addr, (val >> 24) & 0xff);
- led_writeb(opaque, addr + 1, (val >> 16) & 0xff);
- led_writeb(opaque, addr + 2, (val >> 8) & 0xff);
- led_writeb(opaque, addr + 3, val & 0xff);
-#else
- led_writeb(opaque, addr, val & 0xff);
- led_writeb(opaque, addr + 1, (val >> 8) & 0xff);
- led_writeb(opaque, addr + 2, (val >> 16) & 0xff);
- led_writeb(opaque, addr + 3, (val >> 24) & 0xff);
-#endif
+ s->segments = new_val;
+ s->state |= REDRAW_SEGMENTS;
}
-static CPUReadMemoryFunc * const led_read[3] = {
- led_readb,
- led_readw,
- led_readl,
-};
-
-static CPUWriteMemoryFunc * const led_write[3] = {
- led_writeb,
- led_writew,
- led_writel,
+static const MemoryRegionOps led_ops = {
+ .read = jazz_led_read,
+ .write = jazz_led_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .impl.min_access_size = 1,
+ .impl.max_access_size = 1,
};
/***********************************************************/
s->state |= REDRAW_SEGMENTS | REDRAW_BACKGROUND;
}
-static void jazz_led_screen_dump(void *opaque, const char *filename)
-{
- printf("jazz_led_screen_dump() not implemented\n");
-}
-
static void jazz_led_text_update(void *opaque, console_ch_t *chardata)
{
LedState *s = opaque;
dpy_update(s->ds, 0, 0, 2, 1);
}
-void jazz_led_init(target_phys_addr_t base)
+static int jazz_led_post_load(void *opaque, int version_id)
{
- LedState *s;
- int io;
+ /* force refresh */
+ jazz_led_invalidate_display(opaque);
- s = g_malloc0(sizeof(LedState));
+ return 0;
+}
- s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND;
+static const VMStateDescription vmstate_jazz_led = {
+ .name = "jazz-led",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .minimum_version_id_old = 0,
+ .post_load = jazz_led_post_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT8(segments, LedState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static int jazz_led_init(SysBusDevice *dev)
+{
+ LedState *s = FROM_SYSBUS(LedState, dev);
- io = cpu_register_io_memory(led_read, led_write, s,
- DEVICE_NATIVE_ENDIAN);
- cpu_register_physical_memory(base, 1, io);
+ memory_region_init_io(&s->iomem, &led_ops, s, "led", 1);
+ sysbus_init_mmio(dev, &s->iomem);
s->ds = graphic_console_init(jazz_led_update_display,
jazz_led_invalidate_display,
- jazz_led_screen_dump,
+ NULL,
jazz_led_text_update, s);
+
+ return 0;
+}
+
+static void jazz_led_reset(DeviceState *d)
+{
+ LedState *s = DO_UPCAST(LedState, busdev.qdev, d);
+
+ s->segments = 0;
+ s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND;
qemu_console_resize(s->ds, 60, 80);
}
+
+static void jazz_led_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+ k->init = jazz_led_init;
+ dc->desc = "Jazz LED display",
+ dc->vmsd = &vmstate_jazz_led;
+ dc->reset = jazz_led_reset;
+}
+
+static TypeInfo jazz_led_info = {
+ .name = "jazz-led",
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(LedState),
+ .class_init = jazz_led_class_init,
+};
+
+static void jazz_led_register(void)
+{
+ type_register_static(&jazz_led_info);
+}
+
+type_init(jazz_led_register);
projects / qemu.git / blobdiff