2 * Arm PrimeCell PL050 Keyboard / Mouse Interface
4 * Copyright (c) 2006 CodeSourcery.
5 * Written by Paul Brook
7 * This code is licenced under the GPL.
24 static const unsigned char pl050_id[] =
25 { 0x50, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
27 static void pl050_update(void *opaque, int level)
29 pl050_state *s = (pl050_state *)opaque;
33 raise = (s->pending && (s->cr & 0x10) != 0)
34 || (s->cr & 0x08) != 0;
35 pic_set_irq_new(s->pic, s->irq, raise);
38 static uint32_t pl050_read(void *opaque, target_phys_addr_t offset)
40 pl050_state *s = (pl050_state *)opaque;
42 if (offset >= 0xfe0 && offset < 0x1000)
43 return pl050_id[(offset - 0xfe0) >> 2];
45 switch (offset >> 2) {
49 /* KMIC and KMID bits not implemented. */
57 s->last = ps2_read_data(s->dev);
59 case 3: /* KMICLKDIV */
62 return s->pending | 2;
64 cpu_abort (cpu_single_env, "pl050_read: Bad offset %x\n", offset);
69 static void pl050_write(void *opaque, target_phys_addr_t offset,
72 pl050_state *s = (pl050_state *)opaque;
74 switch (offset >> 2) {
77 pl050_update(s, s->pending);
78 /* ??? Need to implement the enable/disable bit. */
81 /* ??? This should toggle the TX interrupt line. */
82 /* ??? This means kbd/mouse can block each other. */
84 ps2_write_mouse(s->dev, value);
86 ps2_write_keyboard(s->dev, value);
89 case 3: /* KMICLKDIV */
93 cpu_abort (cpu_single_env, "pl050_write: Bad offset %x\n", offset);
96 static CPUReadMemoryFunc *pl050_readfn[] = {
102 static CPUWriteMemoryFunc *pl050_writefn[] = {
108 void pl050_init(uint32_t base, void *pic, int irq, int is_mouse)
113 s = (pl050_state *)qemu_mallocz(sizeof(pl050_state));
114 iomemtype = cpu_register_io_memory(0, pl050_readfn,
116 cpu_register_physical_memory(base, 0x00000fff, iomemtype);
120 s->is_mouse = is_mouse;
122 s->dev = ps2_mouse_init(pl050_update, s);
124 s->dev = ps2_kbd_init(pl050_update, s);
125 /* ??? Save/restore. */