2
* Arm PrimeCell PL061 General Purpose IO with additional
3
* Luminary Micro Stellaris bits.
5
* Copyright (c) 2007 CodeSourcery.
6
* Written by Paul Brook
8
* This code is licensed under the GPL.
13
//#define DEBUG_PL061 1
16
#define DPRINTF(fmt, ...) \
17
do { printf("pl061: " fmt , ## __VA_ARGS__); } while (0)
18
#define BADF(fmt, ...) \
19
do { fprintf(stderr, "pl061: error: " fmt , ## __VA_ARGS__); exit(1);} while (0)
21
#define DPRINTF(fmt, ...) do {} while(0)
22
#define BADF(fmt, ...) \
23
do { fprintf(stderr, "pl061: error: " fmt , ## __VA_ARGS__);} while (0)
26
static const uint8_t pl061_id[12] =
27
{ 0x00, 0x00, 0x00, 0x00, 0x61, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
28
static const uint8_t pl061_id_luminary[12] =
29
{ 0x00, 0x00, 0x00, 0x00, 0x61, 0x00, 0x18, 0x01, 0x0d, 0xf0, 0x05, 0xb1 };
57
const unsigned char *id;
60
static const VMStateDescription vmstate_pl061 = {
63
.minimum_version_id = 1,
64
.fields = (VMStateField[]) {
65
VMSTATE_UINT32(locked, pl061_state),
66
VMSTATE_UINT32(data, pl061_state),
67
VMSTATE_UINT32(old_data, pl061_state),
68
VMSTATE_UINT32(dir, pl061_state),
69
VMSTATE_UINT32(isense, pl061_state),
70
VMSTATE_UINT32(ibe, pl061_state),
71
VMSTATE_UINT32(iev, pl061_state),
72
VMSTATE_UINT32(im, pl061_state),
73
VMSTATE_UINT32(istate, pl061_state),
74
VMSTATE_UINT32(afsel, pl061_state),
75
VMSTATE_UINT32(dr2r, pl061_state),
76
VMSTATE_UINT32(dr4r, pl061_state),
77
VMSTATE_UINT32(dr8r, pl061_state),
78
VMSTATE_UINT32(odr, pl061_state),
79
VMSTATE_UINT32(pur, pl061_state),
80
VMSTATE_UINT32(pdr, pl061_state),
81
VMSTATE_UINT32(slr, pl061_state),
82
VMSTATE_UINT32(den, pl061_state),
83
VMSTATE_UINT32(cr, pl061_state),
84
VMSTATE_UINT32(float_high, pl061_state),
85
VMSTATE_UINT32_V(amsel, pl061_state, 2),
90
static void pl061_update(pl061_state *s)
97
/* Outputs float high. */
98
/* FIXME: This is board dependent. */
99
out = (s->data & s->dir) | ~s->dir;
100
changed = s->old_data ^ out;
105
for (i = 0; i < 8; i++) {
107
if (changed & mask) {
108
DPRINTF("Set output %d = %d\n", i, (out & mask) != 0);
109
qemu_set_irq(s->out[i], (out & mask) != 0);
113
/* FIXME: Implement input interrupts. */
116
static uint64_t pl061_read(void *opaque, hwaddr offset,
119
pl061_state *s = (pl061_state *)opaque;
121
if (offset >= 0xfd0 && offset < 0x1000) {
122
return s->id[(offset - 0xfd0) >> 2];
124
if (offset < 0x400) {
125
return s->data & (offset >> 2);
128
case 0x400: /* Direction */
130
case 0x404: /* Interrupt sense */
132
case 0x408: /* Interrupt both edges */
134
case 0x40c: /* Interrupt event */
136
case 0x410: /* Interrupt mask */
138
case 0x414: /* Raw interrupt status */
140
case 0x418: /* Masked interrupt status */
141
return s->istate | s->im;
142
case 0x420: /* Alternate function select */
144
case 0x500: /* 2mA drive */
146
case 0x504: /* 4mA drive */
148
case 0x508: /* 8mA drive */
150
case 0x50c: /* Open drain */
152
case 0x510: /* Pull-up */
154
case 0x514: /* Pull-down */
156
case 0x518: /* Slew rate control */
158
case 0x51c: /* Digital enable */
160
case 0x520: /* Lock */
162
case 0x524: /* Commit */
164
case 0x528: /* Analog mode select */
167
qemu_log_mask(LOG_GUEST_ERROR,
168
"pl061_read: Bad offset %x\n", (int)offset);
173
static void pl061_write(void *opaque, hwaddr offset,
174
uint64_t value, unsigned size)
176
pl061_state *s = (pl061_state *)opaque;
179
if (offset < 0x400) {
180
mask = (offset >> 2) & s->dir;
181
s->data = (s->data & ~mask) | (value & mask);
186
case 0x400: /* Direction */
187
s->dir = value & 0xff;
189
case 0x404: /* Interrupt sense */
190
s->isense = value & 0xff;
192
case 0x408: /* Interrupt both edges */
193
s->ibe = value & 0xff;
195
case 0x40c: /* Interrupt event */
196
s->iev = value & 0xff;
198
case 0x410: /* Interrupt mask */
199
s->im = value & 0xff;
201
case 0x41c: /* Interrupt clear */
204
case 0x420: /* Alternate function select */
206
s->afsel = (s->afsel & ~mask) | (value & mask);
208
case 0x500: /* 2mA drive */
209
s->dr2r = value & 0xff;
211
case 0x504: /* 4mA drive */
212
s->dr4r = value & 0xff;
214
case 0x508: /* 8mA drive */
215
s->dr8r = value & 0xff;
217
case 0x50c: /* Open drain */
218
s->odr = value & 0xff;
220
case 0x510: /* Pull-up */
221
s->pur = value & 0xff;
223
case 0x514: /* Pull-down */
224
s->pdr = value & 0xff;
226
case 0x518: /* Slew rate control */
227
s->slr = value & 0xff;
229
case 0x51c: /* Digital enable */
230
s->den = value & 0xff;
232
case 0x520: /* Lock */
233
s->locked = (value != 0xacce551);
235
case 0x524: /* Commit */
237
s->cr = value & 0xff;
240
s->amsel = value & 0xff;
243
qemu_log_mask(LOG_GUEST_ERROR,
244
"pl061_write: Bad offset %x\n", (int)offset);
249
static void pl061_reset(pl061_state *s)
255
static void pl061_set_irq(void * opaque, int irq, int level)
257
pl061_state *s = (pl061_state *)opaque;
261
if ((s->dir & mask) == 0) {
269
static const MemoryRegionOps pl061_ops = {
271
.write = pl061_write,
272
.endianness = DEVICE_NATIVE_ENDIAN,
275
static int pl061_init(SysBusDevice *dev, const unsigned char *id)
277
pl061_state *s = FROM_SYSBUS(pl061_state, dev);
279
memory_region_init_io(&s->iomem, &pl061_ops, s, "pl061", 0x1000);
280
sysbus_init_mmio(dev, &s->iomem);
281
sysbus_init_irq(dev, &s->irq);
282
qdev_init_gpio_in(&dev->qdev, pl061_set_irq, 8);
283
qdev_init_gpio_out(&dev->qdev, s->out, 8);
288
static int pl061_init_luminary(SysBusDevice *dev)
290
return pl061_init(dev, pl061_id_luminary);
293
static int pl061_init_arm(SysBusDevice *dev)
295
return pl061_init(dev, pl061_id);
298
static void pl061_class_init(ObjectClass *klass, void *data)
300
DeviceClass *dc = DEVICE_CLASS(klass);
301
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
303
k->init = pl061_init_arm;
304
dc->vmsd = &vmstate_pl061;
307
static const TypeInfo pl061_info = {
309
.parent = TYPE_SYS_BUS_DEVICE,
310
.instance_size = sizeof(pl061_state),
311
.class_init = pl061_class_init,
314
static void pl061_luminary_class_init(ObjectClass *klass, void *data)
316
DeviceClass *dc = DEVICE_CLASS(klass);
317
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
319
k->init = pl061_init_luminary;
320
dc->vmsd = &vmstate_pl061;
323
static const TypeInfo pl061_luminary_info = {
324
.name = "pl061_luminary",
325
.parent = TYPE_SYS_BUS_DEVICE,
326
.instance_size = sizeof(pl061_state),
327
.class_init = pl061_luminary_class_init,
330
static void pl061_register_types(void)
332
type_register_static(&pl061_info);
333
type_register_static(&pl061_luminary_info);
336
type_init(pl061_register_types)