1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
|
/*
* PXA270-based Intel Mainstone platforms.
* FPGA driver
*
* Copyright (c) 2007 by Armin Kuster <akuster@kama-aina.net> or
* <akuster@mvista.com>
*
* This code is licensed under the GNU GPL v2.
*/
#include "hw.h"
#include "pxa.h"
#include "mainstone.h"
/* Mainstone FPGA for extern irqs */
#define FPGA_GPIO_PIN 0
#define MST_NUM_IRQS 16
#define MST_BASE MST_FPGA_PHYS
#define MST_LEDDAT1 0x10
#define MST_LEDDAT2 0x14
#define MST_LEDCTRL 0x40
#define MST_GPSWR 0x60
#define MST_MSCWR1 0x80
#define MST_MSCWR2 0x84
#define MST_MSCWR3 0x88
#define MST_MSCRD 0x90
#define MST_INTMSKENA 0xc0
#define MST_INTSETCLR 0xd0
#define MST_PCMCIA0 0xe0
#define MST_PCMCIA1 0xe4
typedef struct mst_irq_state{
target_phys_addr_t target_base;
qemu_irq *parent;
qemu_irq *pins;
uint32_t prev_level;
uint32_t leddat1;
uint32_t leddat2;
uint32_t ledctrl;
uint32_t gpswr;
uint32_t mscwr1;
uint32_t mscwr2;
uint32_t mscwr3;
uint32_t mscrd;
uint32_t intmskena;
uint32_t intsetclr;
uint32_t pcmcia0;
uint32_t pcmcia1;
}mst_irq_state;
static void
mst_fpga_update_gpio(mst_irq_state *s)
{
uint32_t level, diff;
int bit;
level = s->prev_level ^ s->intsetclr;
for (diff = s->prev_level ^ level; diff; diff ^= 1 << bit) {
bit = ffs(diff) - 1;
qemu_set_irq(s->pins[bit], (level >> bit) & 1 );
}
s->prev_level = level;
}
static void
mst_fpga_set_irq(void *opaque, int irq, int level)
{
mst_irq_state *s = (mst_irq_state *)opaque;
if (level)
s->prev_level |= 1u << irq;
else
s->prev_level &= ~(1u << irq);
if(s->intmskena & (1u << irq)) {
s->intsetclr = 1u << irq;
qemu_set_irq(s->parent[0], level);
}
}
static uint32_t
mst_fpga_readb(void *opaque, target_phys_addr_t addr)
{
mst_irq_state *s = (mst_irq_state *) opaque;
addr -= s->target_base;
switch (addr) {
case MST_LEDDAT1:
return s->leddat1;
case MST_LEDDAT2:
return s->leddat2;
case MST_LEDCTRL:
return s->ledctrl;
case MST_GPSWR:
return s->gpswr;
case MST_MSCWR1:
return s->mscwr1;
case MST_MSCWR2:
return s->mscwr2;
case MST_MSCWR3:
return s->mscwr3;
case MST_MSCRD:
return s->mscrd;
case MST_INTMSKENA:
return s->intmskena;
case MST_INTSETCLR:
return s->intsetclr;
case MST_PCMCIA0:
return s->pcmcia0;
case MST_PCMCIA1:
return s->pcmcia1;
default:
printf("Mainstone - mst_fpga_readb: Bad register offset "
REG_FMT " \n", addr);
}
return 0;
}
static void
mst_fpga_writeb(void *opaque, target_phys_addr_t addr, uint32_t value)
{
mst_irq_state *s = (mst_irq_state *) opaque;
addr -= s->target_base;
value &= 0xffffffff;
switch (addr) {
case MST_LEDDAT1:
s->leddat1 = value;
break;
case MST_LEDDAT2:
s->leddat2 = value;
break;
case MST_LEDCTRL:
s->ledctrl = value;
break;
case MST_GPSWR:
s->gpswr = value;
break;
case MST_MSCWR1:
s->mscwr1 = value;
break;
case MST_MSCWR2:
s->mscwr2 = value;
break;
case MST_MSCWR3:
s->mscwr3 = value;
break;
case MST_MSCRD:
s->mscrd = value;
break;
case MST_INTMSKENA: /* Mask interupt */
s->intmskena = (value & 0xFEEFF);
mst_fpga_update_gpio(s);
break;
case MST_INTSETCLR: /* clear or set interrupt */
s->intsetclr = (value & 0xFEEFF);
break;
case MST_PCMCIA0:
s->pcmcia0 = value;
break;
case MST_PCMCIA1:
s->pcmcia1 = value;
break;
default:
printf("Mainstone - mst_fpga_writeb: Bad register offset "
REG_FMT " \n", addr);
}
}
CPUReadMemoryFunc *mst_fpga_readfn[] = {
mst_fpga_readb,
mst_fpga_readb,
mst_fpga_readb,
};
CPUWriteMemoryFunc *mst_fpga_writefn[] = {
mst_fpga_writeb,
mst_fpga_writeb,
mst_fpga_writeb,
};
static void
mst_fpga_save(QEMUFile *f, void *opaque)
{
struct mst_irq_state *s = (mst_irq_state *) opaque;
qemu_put_be32s(f, &s->prev_level);
qemu_put_be32s(f, &s->leddat1);
qemu_put_be32s(f, &s->leddat2);
qemu_put_be32s(f, &s->ledctrl);
qemu_put_be32s(f, &s->gpswr);
qemu_put_be32s(f, &s->mscwr1);
qemu_put_be32s(f, &s->mscwr2);
qemu_put_be32s(f, &s->mscwr3);
qemu_put_be32s(f, &s->mscrd);
qemu_put_be32s(f, &s->intmskena);
qemu_put_be32s(f, &s->intsetclr);
qemu_put_be32s(f, &s->pcmcia0);
qemu_put_be32s(f, &s->pcmcia1);
}
static int
mst_fpga_load(QEMUFile *f, void *opaque, int version_id)
{
mst_irq_state *s = (mst_irq_state *) opaque;
qemu_get_be32s(f, &s->prev_level);
qemu_get_be32s(f, &s->leddat1);
qemu_get_be32s(f, &s->leddat2);
qemu_get_be32s(f, &s->ledctrl);
qemu_get_be32s(f, &s->gpswr);
qemu_get_be32s(f, &s->mscwr1);
qemu_get_be32s(f, &s->mscwr2);
qemu_get_be32s(f, &s->mscwr3);
qemu_get_be32s(f, &s->mscrd);
qemu_get_be32s(f, &s->intmskena);
qemu_get_be32s(f, &s->intsetclr);
qemu_get_be32s(f, &s->pcmcia0);
qemu_get_be32s(f, &s->pcmcia1);
return 0;
}
qemu_irq *mst_irq_init(struct pxa2xx_state_s *cpu, uint32_t base, int irq)
{
mst_irq_state *s;
int iomemtype;
qemu_irq *qi;
s = (mst_irq_state *)
qemu_mallocz(sizeof(mst_irq_state));
if (!s)
return NULL;
s->target_base = base;
s->parent = &cpu->pic[irq];
/* alloc the external 16 irqs */
qi = qemu_allocate_irqs(mst_fpga_set_irq, s, MST_NUM_IRQS);
s->pins = qi;
iomemtype = cpu_register_io_memory(0, mst_fpga_readfn,
mst_fpga_writefn, s);
cpu_register_physical_memory(MST_BASE, 0x00100000, iomemtype);
register_savevm("mainstone_fpga", 0, 0, mst_fpga_save, mst_fpga_load, s);
return qi;
}
|
