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
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
|
/*
* linux/arch/arm/mach-clps7500/core.c
*
* Copyright (C) 1998 Russell King
* Copyright (C) 1999 Nexus Electronics Ltd
*
* Extra MM routines for CL7500 architecture
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/list.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/serial_8250.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
#include <asm/hardware.h>
#include <asm/hardware/iomd.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
unsigned int vram_size;
static void cl7500_ack_irq_a(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << irq;
val = iomd_readb(IOMD_IRQMASKA);
iomd_writeb(val & ~mask, IOMD_IRQMASKA);
iomd_writeb(mask, IOMD_IRQCLRA);
}
static void cl7500_mask_irq_a(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << irq;
val = iomd_readb(IOMD_IRQMASKA);
iomd_writeb(val & ~mask, IOMD_IRQMASKA);
}
static void cl7500_unmask_irq_a(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << irq;
val = iomd_readb(IOMD_IRQMASKA);
iomd_writeb(val | mask, IOMD_IRQMASKA);
}
static struct irq_chip clps7500_a_chip = {
.ack = cl7500_ack_irq_a,
.mask = cl7500_mask_irq_a,
.unmask = cl7500_unmask_irq_a,
};
static void cl7500_mask_irq_b(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_IRQMASKB);
iomd_writeb(val & ~mask, IOMD_IRQMASKB);
}
static void cl7500_unmask_irq_b(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_IRQMASKB);
iomd_writeb(val | mask, IOMD_IRQMASKB);
}
static struct irq_chip clps7500_b_chip = {
.ack = cl7500_mask_irq_b,
.mask = cl7500_mask_irq_b,
.unmask = cl7500_unmask_irq_b,
};
static void cl7500_mask_irq_c(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_IRQMASKC);
iomd_writeb(val & ~mask, IOMD_IRQMASKC);
}
static void cl7500_unmask_irq_c(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_IRQMASKC);
iomd_writeb(val | mask, IOMD_IRQMASKC);
}
static struct irq_chip clps7500_c_chip = {
.ack = cl7500_mask_irq_c,
.mask = cl7500_mask_irq_c,
.unmask = cl7500_unmask_irq_c,
};
static void cl7500_mask_irq_d(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_IRQMASKD);
iomd_writeb(val & ~mask, IOMD_IRQMASKD);
}
static void cl7500_unmask_irq_d(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_IRQMASKD);
iomd_writeb(val | mask, IOMD_IRQMASKD);
}
static struct irq_chip clps7500_d_chip = {
.ack = cl7500_mask_irq_d,
.mask = cl7500_mask_irq_d,
.unmask = cl7500_unmask_irq_d,
};
static void cl7500_mask_irq_dma(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_DMAMASK);
iomd_writeb(val & ~mask, IOMD_DMAMASK);
}
static void cl7500_unmask_irq_dma(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_DMAMASK);
iomd_writeb(val | mask, IOMD_DMAMASK);
}
static struct irq_chip clps7500_dma_chip = {
.ack = cl7500_mask_irq_dma,
.mask = cl7500_mask_irq_dma,
.unmask = cl7500_unmask_irq_dma,
};
static void cl7500_mask_irq_fiq(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_FIQMASK);
iomd_writeb(val & ~mask, IOMD_FIQMASK);
}
static void cl7500_unmask_irq_fiq(unsigned int irq)
{
unsigned int val, mask;
mask = 1 << (irq & 7);
val = iomd_readb(IOMD_FIQMASK);
iomd_writeb(val | mask, IOMD_FIQMASK);
}
static struct irq_chip clps7500_fiq_chip = {
.ack = cl7500_mask_irq_fiq,
.mask = cl7500_mask_irq_fiq,
.unmask = cl7500_unmask_irq_fiq,
};
static void cl7500_no_action(unsigned int irq)
{
}
static struct irq_chip clps7500_no_chip = {
.ack = cl7500_no_action,
.mask = cl7500_no_action,
.unmask = cl7500_no_action,
};
static struct irqaction irq_isa = { no_action, 0, CPU_MASK_NONE, "isa", NULL, NULL };
static void __init clps7500_init_irq(void)
{
unsigned int irq, flags;
iomd_writeb(0, IOMD_IRQMASKA);
iomd_writeb(0, IOMD_IRQMASKB);
iomd_writeb(0, IOMD_FIQMASK);
iomd_writeb(0, IOMD_DMAMASK);
for (irq = 0; irq < NR_IRQS; irq++) {
flags = IRQF_VALID;
if (irq <= 6 || (irq >= 9 && irq <= 15) ||
(irq >= 48 && irq <= 55))
flags |= IRQF_PROBE;
switch (irq) {
case 0 ... 7:
set_irq_chip(irq, &clps7500_a_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, flags);
break;
case 8 ... 15:
set_irq_chip(irq, &clps7500_b_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, flags);
break;
case 16 ... 22:
set_irq_chip(irq, &clps7500_dma_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, flags);
break;
case 24 ... 31:
set_irq_chip(irq, &clps7500_c_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, flags);
break;
case 40 ... 47:
set_irq_chip(irq, &clps7500_d_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, flags);
break;
case 48 ... 55:
set_irq_chip(irq, &clps7500_no_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, flags);
break;
case 64 ... 72:
set_irq_chip(irq, &clps7500_fiq_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, flags);
break;
}
}
setup_irq(IRQ_ISA, &irq_isa);
}
static struct map_desc cl7500_io_desc[] __initdata = {
{ /* IO space */
.virtual = (unsigned long)IO_BASE,
.pfn = __phys_to_pfn(IO_START),
.length = IO_SIZE,
.type = MT_DEVICE
}, { /* ISA space */
.virtual = ISA_BASE,
.pfn = __phys_to_pfn(ISA_START),
.length = ISA_SIZE,
.type = MT_DEVICE
}, { /* Flash */
.virtual = FLASH_BASE,
.pfn = __phys_to_pfn(FLASH_START),
.length = FLASH_SIZE,
.type = MT_DEVICE
}, { /* LED */
.virtual = LED_BASE,
.pfn = __phys_to_pfn(LED_START),
.length = LED_SIZE,
.type = MT_DEVICE
}
};
static void __init clps7500_map_io(void)
{
iotable_init(cl7500_io_desc, ARRAY_SIZE(cl7500_io_desc));
}
extern void ioctime_init(void);
extern unsigned long ioc_timer_gettimeoffset(void);
static irqreturn_t
clps7500_timer_interrupt(int irq, void *dev_id)
{
write_seqlock(&xtime_lock);
timer_tick();
/* Why not using do_leds interface?? */
{
/* Twinkle the lights. */
static int count, state = 0xff00;
if (count-- == 0) {
state ^= 0x100;
count = 25;
*((volatile unsigned int *)LED_ADDRESS) = state;
}
}
write_sequnlock(&xtime_lock);
return IRQ_HANDLED;
}
static struct irqaction clps7500_timer_irq = {
.name = "CLPS7500 Timer Tick",
.flags = IRQF_DISABLED | IRQF_TIMER,
.handler = clps7500_timer_interrupt,
};
/*
* Set up timer interrupt.
*/
static void __init clps7500_timer_init(void)
{
ioctime_init();
setup_irq(IRQ_TIMER, &clps7500_timer_irq);
}
static struct sys_timer clps7500_timer = {
.init = clps7500_timer_init,
.offset = ioc_timer_gettimeoffset,
};
static struct plat_serial8250_port serial_platform_data[] = {
{
.mapbase = 0x03010fe0,
.irq = 10,
.uartclk = 1843200,
.regshift = 2,
.iotype = UPIO_MEM,
.flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SKIP_TEST,
},
{
.mapbase = 0x03010be0,
.irq = 0,
.uartclk = 1843200,
.regshift = 2,
.iotype = UPIO_MEM,
.flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SKIP_TEST,
},
{
.iobase = ISASLOT_IO + 0x2e8,
.irq = 41,
.uartclk = 1843200,
.regshift = 0,
.iotype = UPIO_PORT,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
},
{
.iobase = ISASLOT_IO + 0x3e8,
.irq = 40,
.uartclk = 1843200,
.regshift = 0,
.iotype = UPIO_PORT,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
},
{ },
};
static struct platform_device serial_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev = {
.platform_data = serial_platform_data,
},
};
static void __init clps7500_init(void)
{
platform_device_register(&serial_device);
}
MACHINE_START(CLPS7500, "CL-PS7500")
/* Maintainer: Philip Blundell */
.phys_io = 0x03000000,
.io_pg_offst = ((0xe0000000) >> 18) & 0xfffc,
.map_io = clps7500_map_io,
.init_irq = clps7500_init_irq,
.init_machine = clps7500_init,
.timer = &clps7500_timer,
MACHINE_END
|
