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16#include <linux/types.h>
17#include <linux/kernel.h>
18#include <linux/mm.h>
19#include <linux/tty.h>
20#include <linux/clocksource.h>
21#include <linux/console.h>
22#include <linux/linkage.h>
23#include <linux/init.h>
24#include <linux/major.h>
25#include <linux/genhd.h>
26#include <linux/rtc.h>
27#include <linux/interrupt.h>
28
29#include <asm/bootinfo.h>
30#include <asm/bootinfo-vme.h>
31#include <asm/byteorder.h>
32#include <asm/setup.h>
33#include <asm/irq.h>
34#include <asm/traps.h>
35#include <asm/machdep.h>
36#include <asm/mvme147hw.h>
37
38
39static void mvme147_get_model(char *model);
40extern void mvme147_sched_init(void);
41extern int mvme147_hwclk (int, struct rtc_time *);
42extern void mvme147_reset (void);
43
44
45static int bcd2int (unsigned char b);
46
47
48int __init mvme147_parse_bootinfo(const struct bi_record *bi)
49{
50 uint16_t tag = be16_to_cpu(bi->tag);
51 if (tag == BI_VME_TYPE || tag == BI_VME_BRDINFO)
52 return 0;
53 else
54 return 1;
55}
56
57void mvme147_reset(void)
58{
59 pr_info("\r\n\nCalled mvme147_reset\r\n");
60 m147_pcc->watchdog = 0x0a;
61 m147_pcc->watchdog = 0xa5;
62 while (1)
63 ;
64}
65
66static void mvme147_get_model(char *model)
67{
68 sprintf(model, "Motorola MVME147");
69}
70
71
72
73
74
75
76void __init mvme147_init_IRQ(void)
77{
78 m68k_setup_user_interrupt(VEC_USER, 192);
79}
80
81void __init config_mvme147(void)
82{
83 mach_sched_init = mvme147_sched_init;
84 mach_init_IRQ = mvme147_init_IRQ;
85 mach_hwclk = mvme147_hwclk;
86 mach_reset = mvme147_reset;
87 mach_get_model = mvme147_get_model;
88
89
90 if (!vme_brdtype)
91 vme_brdtype = VME_TYPE_MVME147;
92}
93
94static u64 mvme147_read_clk(struct clocksource *cs);
95
96static struct clocksource mvme147_clk = {
97 .name = "pcc",
98 .rating = 250,
99 .read = mvme147_read_clk,
100 .mask = CLOCKSOURCE_MASK(32),
101 .flags = CLOCK_SOURCE_IS_CONTINUOUS,
102};
103
104static u32 clk_total;
105
106#define PCC_TIMER_CLOCK_FREQ 160000
107#define PCC_TIMER_CYCLES (PCC_TIMER_CLOCK_FREQ / HZ)
108#define PCC_TIMER_PRELOAD (0x10000 - PCC_TIMER_CYCLES)
109
110
111
112static irqreturn_t mvme147_timer_int (int irq, void *dev_id)
113{
114 unsigned long flags;
115
116 local_irq_save(flags);
117 m147_pcc->t1_cntrl = PCC_TIMER_CLR_OVF | PCC_TIMER_COC_EN |
118 PCC_TIMER_TIC_EN;
119 m147_pcc->t1_int_cntrl = PCC_INT_ENAB | PCC_TIMER_INT_CLR |
120 PCC_LEVEL_TIMER1;
121 clk_total += PCC_TIMER_CYCLES;
122 legacy_timer_tick(1);
123 local_irq_restore(flags);
124
125 return IRQ_HANDLED;
126}
127
128
129void mvme147_sched_init (void)
130{
131 if (request_irq(PCC_IRQ_TIMER1, mvme147_timer_int, IRQF_TIMER,
132 "timer 1", NULL))
133 pr_err("Couldn't register timer interrupt\n");
134
135
136
137 m147_pcc->t1_preload = PCC_TIMER_PRELOAD;
138 m147_pcc->t1_cntrl = PCC_TIMER_CLR_OVF | PCC_TIMER_COC_EN |
139 PCC_TIMER_TIC_EN;
140 m147_pcc->t1_int_cntrl = PCC_INT_ENAB | PCC_TIMER_INT_CLR |
141 PCC_LEVEL_TIMER1;
142
143 clocksource_register_hz(&mvme147_clk, PCC_TIMER_CLOCK_FREQ);
144}
145
146static u64 mvme147_read_clk(struct clocksource *cs)
147{
148 unsigned long flags;
149 u8 overflow, tmp;
150 u16 count;
151 u32 ticks;
152
153 local_irq_save(flags);
154 tmp = m147_pcc->t1_cntrl >> 4;
155 count = m147_pcc->t1_count;
156 overflow = m147_pcc->t1_cntrl >> 4;
157 if (overflow != tmp)
158 count = m147_pcc->t1_count;
159 count -= PCC_TIMER_PRELOAD;
160 ticks = count + overflow * PCC_TIMER_CYCLES;
161 ticks += clk_total;
162 local_irq_restore(flags);
163
164 return ticks;
165}
166
167static int bcd2int (unsigned char b)
168{
169 return ((b>>4)*10 + (b&15));
170}
171
172int mvme147_hwclk(int op, struct rtc_time *t)
173{
174 if (!op) {
175 m147_rtc->ctrl = RTC_READ;
176 t->tm_year = bcd2int (m147_rtc->bcd_year);
177 t->tm_mon = bcd2int(m147_rtc->bcd_mth) - 1;
178 t->tm_mday = bcd2int (m147_rtc->bcd_dom);
179 t->tm_hour = bcd2int (m147_rtc->bcd_hr);
180 t->tm_min = bcd2int (m147_rtc->bcd_min);
181 t->tm_sec = bcd2int (m147_rtc->bcd_sec);
182 m147_rtc->ctrl = 0;
183 if (t->tm_year < 70)
184 t->tm_year += 100;
185 } else {
186
187 return -EOPNOTSUPP;
188 }
189 return 0;
190}
191