2 * Arm PrimeCell PL050 Keyboard / Mouse Interface
4 * Copyright (c) 2006-2007 CodeSourcery.
5 * Written by Paul Brook
7 * This code is licenced under the GPL.
23 #define PL050_TXEMPTY (1 << 6)
24 #define PL050_TXBUSY (1 << 5)
25 #define PL050_RXFULL (1 << 4)
26 #define PL050_RXBUSY (1 << 3)
27 #define PL050_RXPARITY (1 << 2)
28 #define PL050_KMIC (1 << 1)
29 #define PL050_KMID (1 << 0)
31 static const unsigned char pl050_id[] =
32 { 0x50, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
34 static void pl050_update(void *opaque, int level)
36 pl050_state *s = (pl050_state *)opaque;
40 raise = (s->pending && (s->cr & 0x10) != 0)
41 || (s->cr & 0x08) != 0;
42 qemu_set_irq(s->irq, raise);
45 static uint32_t pl050_read(void *opaque, target_phys_addr_t offset)
47 pl050_state *s = (pl050_state *)opaque;
49 if (offset >= 0xfe0 && offset < 0x1000)
50 return pl050_id[(offset - 0xfe0) >> 2];
52 switch (offset >> 2) {
61 val = val ^ (val >> 4);
62 val = val ^ (val >> 2);
63 val = (val ^ (val >> 1)) & 1;
67 stat |= PL050_RXPARITY;
75 s->last = ps2_read_data(s->dev);
77 case 3: /* KMICLKDIV */
80 return s->pending | 2;
82 cpu_abort (cpu_single_env, "pl050_read: Bad offset %x\n", offset);
87 static void pl050_write(void *opaque, target_phys_addr_t offset,
90 pl050_state *s = (pl050_state *)opaque;
92 switch (offset >> 2) {
95 pl050_update(s, s->pending);
96 /* ??? Need to implement the enable/disable bit. */
99 /* ??? This should toggle the TX interrupt line. */
100 /* ??? This means kbd/mouse can block each other. */
102 ps2_write_mouse(s->dev, value);
104 ps2_write_keyboard(s->dev, value);
107 case 3: /* KMICLKDIV */
111 cpu_abort (cpu_single_env, "pl050_write: Bad offset %x\n", offset);
114 static CPUReadMemoryFunc *pl050_readfn[] = {
120 static CPUWriteMemoryFunc *pl050_writefn[] = {
126 void pl050_init(uint32_t base, qemu_irq irq, int is_mouse)
131 s = (pl050_state *)qemu_mallocz(sizeof(pl050_state));
132 iomemtype = cpu_register_io_memory(0, pl050_readfn,
134 cpu_register_physical_memory(base, 0x00001000, iomemtype);
137 s->is_mouse = is_mouse;
139 s->dev = ps2_mouse_init(pl050_update, s);
141 s->dev = ps2_kbd_init(pl050_update, s);
142 /* ??? Save/restore. */