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.
11 #include "primecell.h"
25 #define PL050_TXEMPTY (1 << 6)
26 #define PL050_TXBUSY (1 << 5)
27 #define PL050_RXFULL (1 << 4)
28 #define PL050_RXBUSY (1 << 3)
29 #define PL050_RXPARITY (1 << 2)
30 #define PL050_KMIC (1 << 1)
31 #define PL050_KMID (1 << 0)
33 static const unsigned char pl050_id[] =
34 { 0x50, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
36 static void pl050_update(void *opaque, int level)
38 pl050_state *s = (pl050_state *)opaque;
42 raise = (s->pending && (s->cr & 0x10) != 0)
43 || (s->cr & 0x08) != 0;
44 qemu_set_irq(s->irq, raise);
47 static uint32_t pl050_read(void *opaque, target_phys_addr_t offset)
49 pl050_state *s = (pl050_state *)opaque;
51 if (offset >= 0xfe0 && offset < 0x1000)
52 return pl050_id[(offset - 0xfe0) >> 2];
54 switch (offset >> 2) {
63 val = val ^ (val >> 4);
64 val = val ^ (val >> 2);
65 val = (val ^ (val >> 1)) & 1;
69 stat |= PL050_RXPARITY;
77 s->last = ps2_read_data(s->dev);
79 case 3: /* KMICLKDIV */
82 return s->pending | 2;
84 cpu_abort (cpu_single_env, "pl050_read: Bad offset %x\n", (int)offset);
89 static void pl050_write(void *opaque, target_phys_addr_t offset,
92 pl050_state *s = (pl050_state *)opaque;
94 switch (offset >> 2) {
97 pl050_update(s, s->pending);
98 /* ??? Need to implement the enable/disable bit. */
100 case 2: /* KMIDATA */
101 /* ??? This should toggle the TX interrupt line. */
102 /* ??? This means kbd/mouse can block each other. */
104 ps2_write_mouse(s->dev, value);
106 ps2_write_keyboard(s->dev, value);
109 case 3: /* KMICLKDIV */
113 cpu_abort (cpu_single_env, "pl050_write: Bad offset %x\n", (int)offset);
116 static CPUReadMemoryFunc *pl050_readfn[] = {
122 static CPUWriteMemoryFunc *pl050_writefn[] = {
128 void pl050_init(uint32_t base, qemu_irq irq, int is_mouse)
133 s = (pl050_state *)qemu_mallocz(sizeof(pl050_state));
134 iomemtype = cpu_register_io_memory(0, pl050_readfn,
136 cpu_register_physical_memory(base, 0x00001000, iomemtype);
139 s->is_mouse = is_mouse;
141 s->dev = ps2_mouse_init(pl050_update, s);
143 s->dev = ps2_kbd_init(pl050_update, s);
144 /* ??? Save/restore. */