2 * Arm PrimeCell PL050 Keyboard / Mouse Interface
4 * Copyright (c) 2006-2007 CodeSourcery.
5 * Written by Paul Brook
7 * This code is licensed under the GPL.
25 static const VMStateDescription vmstate_pl050 = {
28 .minimum_version_id = 1,
29 .fields = (VMStateField[]) {
30 VMSTATE_UINT32(cr, pl050_state),
31 VMSTATE_UINT32(clk, pl050_state),
32 VMSTATE_UINT32(last, pl050_state),
33 VMSTATE_INT32(pending, pl050_state),
34 VMSTATE_INT32(is_mouse, pl050_state),
39 #define PL050_TXEMPTY (1 << 6)
40 #define PL050_TXBUSY (1 << 5)
41 #define PL050_RXFULL (1 << 4)
42 #define PL050_RXBUSY (1 << 3)
43 #define PL050_RXPARITY (1 << 2)
44 #define PL050_KMIC (1 << 1)
45 #define PL050_KMID (1 << 0)
47 static const unsigned char pl050_id[] =
48 { 0x50, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
50 static void pl050_update(void *opaque, int level)
52 pl050_state *s = (pl050_state *)opaque;
56 raise = (s->pending && (s->cr & 0x10) != 0)
57 || (s->cr & 0x08) != 0;
58 qemu_set_irq(s->irq, raise);
61 static uint64_t pl050_read(void *opaque, target_phys_addr_t offset,
64 pl050_state *s = (pl050_state *)opaque;
65 if (offset >= 0xfe0 && offset < 0x1000)
66 return pl050_id[(offset - 0xfe0) >> 2];
68 switch (offset >> 2) {
77 val = val ^ (val >> 4);
78 val = val ^ (val >> 2);
79 val = (val ^ (val >> 1)) & 1;
83 stat |= PL050_RXPARITY;
91 s->last = ps2_read_data(s->dev);
93 case 3: /* KMICLKDIV */
96 return s->pending | 2;
98 hw_error("pl050_read: Bad offset %x\n", (int)offset);
103 static void pl050_write(void *opaque, target_phys_addr_t offset,
104 uint64_t value, unsigned size)
106 pl050_state *s = (pl050_state *)opaque;
107 switch (offset >> 2) {
110 pl050_update(s, s->pending);
111 /* ??? Need to implement the enable/disable bit. */
113 case 2: /* KMIDATA */
114 /* ??? This should toggle the TX interrupt line. */
115 /* ??? This means kbd/mouse can block each other. */
117 ps2_write_mouse(s->dev, value);
119 ps2_write_keyboard(s->dev, value);
122 case 3: /* KMICLKDIV */
126 ps2_keyboard_set_translation(s->dev, 1);
131 hw_error("pl050_write: Bad offset %x\n", (int)offset);
134 static const MemoryRegionOps pl050_ops = {
136 .write = pl050_write,
137 .endianness = DEVICE_NATIVE_ENDIAN,
140 static int pl050_init(SysBusDevice *dev, int is_mouse)
142 pl050_state *s = FROM_SYSBUS(pl050_state, dev);
144 memory_region_init_io(&s->iomem, &pl050_ops, s, "pl050", 0x1000);
145 sysbus_init_mmio(dev, &s->iomem);
146 sysbus_init_irq(dev, &s->irq);
147 s->is_mouse = is_mouse;
149 s->dev = ps2_mouse_init(pl050_update, s);
151 s->dev = ps2_kbd_init(pl050_update, s);
155 static int pl050_init_keyboard(SysBusDevice *dev)
157 return pl050_init(dev, 0);
160 static int pl050_init_mouse(SysBusDevice *dev)
162 return pl050_init(dev, 1);
165 static void pl050_kbd_class_init(ObjectClass *klass, void *data)
167 DeviceClass *dc = DEVICE_CLASS(klass);
168 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
170 k->init = pl050_init_keyboard;
171 dc->vmsd = &vmstate_pl050;
174 static TypeInfo pl050_kbd_info = {
175 .name = "pl050_keyboard",
176 .parent = TYPE_SYS_BUS_DEVICE,
177 .instance_size = sizeof(pl050_state),
178 .class_init = pl050_kbd_class_init,
181 static void pl050_mouse_class_init(ObjectClass *klass, void *data)
183 DeviceClass *dc = DEVICE_CLASS(klass);
184 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
186 k->init = pl050_init_mouse;
187 dc->vmsd = &vmstate_pl050;
190 static TypeInfo pl050_mouse_info = {
191 .name = "pl050_mouse",
192 .parent = TYPE_SYS_BUS_DEVICE,
193 .instance_size = sizeof(pl050_state),
194 .class_init = pl050_mouse_class_init,
197 static void pl050_register_types(void)
199 type_register_static(&pl050_kbd_info);
200 type_register_static(&pl050_mouse_info);
203 type_init(pl050_register_types)