Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma
[linux-2.6.git] / arch / m68k / hp300 / config.c
1 /*
2  *  linux/arch/m68k/hp300/config.c
3  *
4  *  Copyright (C) 1998 Philip Blundell <philb@gnu.org>
5  *
6  *  This file contains the HP300-specific initialisation code.  It gets
7  *  called by setup.c.
8  */
9
10 #include <linux/module.h>
11 #include <linux/init.h>
12 #include <linux/string.h>
13 #include <linux/kernel.h>
14 #include <linux/console.h>
15
16 #include <asm/bootinfo.h>
17 #include <asm/machdep.h>
18 #include <asm/blinken.h>
19 #include <asm/io.h>                               /* readb() and writeb() */
20 #include <asm/hp300hw.h>
21 #include <asm/rtc.h>
22
23 #include "time.h"
24
25 unsigned long hp300_model;
26 unsigned long hp300_uart_scode = -1;
27 unsigned char hp300_ledstate;
28 EXPORT_SYMBOL(hp300_ledstate);
29
30 static char s_hp330[] __initdata = "330";
31 static char s_hp340[] __initdata = "340";
32 static char s_hp345[] __initdata = "345";
33 static char s_hp360[] __initdata = "360";
34 static char s_hp370[] __initdata = "370";
35 static char s_hp375[] __initdata = "375";
36 static char s_hp380[] __initdata = "380";
37 static char s_hp385[] __initdata = "385";
38 static char s_hp400[] __initdata = "400";
39 static char s_hp425t[] __initdata = "425t";
40 static char s_hp425s[] __initdata = "425s";
41 static char s_hp425e[] __initdata = "425e";
42 static char s_hp433t[] __initdata = "433t";
43 static char s_hp433s[] __initdata = "433s";
44 static char *hp300_models[] __initdata = {
45         [HP_320]        = NULL,
46         [HP_330]        = s_hp330,
47         [HP_340]        = s_hp340,
48         [HP_345]        = s_hp345,
49         [HP_350]        = NULL,
50         [HP_360]        = s_hp360,
51         [HP_370]        = s_hp370,
52         [HP_375]        = s_hp375,
53         [HP_380]        = s_hp380,
54         [HP_385]        = s_hp385,
55         [HP_400]        = s_hp400,
56         [HP_425T]       = s_hp425t,
57         [HP_425S]       = s_hp425s,
58         [HP_425E]       = s_hp425e,
59         [HP_433T]       = s_hp433t,
60         [HP_433S]       = s_hp433s,
61 };
62
63 static char hp300_model_name[13] = "HP9000/";
64
65 extern void hp300_reset(void);
66 #ifdef CONFIG_SERIAL_8250_CONSOLE
67 extern int hp300_setup_serial_console(void) __init;
68 #endif
69
70 int __init hp300_parse_bootinfo(const struct bi_record *record)
71 {
72         int unknown = 0;
73         const unsigned long *data = record->data;
74
75         switch (record->tag) {
76         case BI_HP300_MODEL:
77                 hp300_model = *data;
78                 break;
79
80         case BI_HP300_UART_SCODE:
81                 hp300_uart_scode = *data;
82                 break;
83
84         case BI_HP300_UART_ADDR:
85                 /* serial port address: ignored here */
86                 break;
87
88         default:
89                 unknown = 1;
90         }
91
92         return unknown;
93 }
94
95 #ifdef CONFIG_HEARTBEAT
96 static void hp300_pulse(int x)
97 {
98         if (x)
99                 blinken_leds(0x10, 0);
100         else
101                 blinken_leds(0, 0x10);
102 }
103 #endif
104
105 static void hp300_get_model(char *model)
106 {
107         strcpy(model, hp300_model_name);
108 }
109
110 #define RTCBASE                 0xf0420000
111 #define RTC_DATA                0x1
112 #define RTC_CMD                 0x3
113
114 #define RTC_BUSY                0x02
115 #define RTC_DATA_RDY            0x01
116
117 #define rtc_busy()              (in_8(RTCBASE + RTC_CMD) & RTC_BUSY)
118 #define rtc_data_available()    (in_8(RTCBASE + RTC_CMD) & RTC_DATA_RDY)
119 #define rtc_status()            (in_8(RTCBASE + RTC_CMD))
120 #define rtc_command(x)          out_8(RTCBASE + RTC_CMD, (x))
121 #define rtc_read_data()         (in_8(RTCBASE + RTC_DATA))
122 #define rtc_write_data(x)       out_8(RTCBASE + RTC_DATA, (x))
123
124 #define RTC_SETREG      0xe0
125 #define RTC_WRITEREG    0xc2
126 #define RTC_READREG     0xc3
127
128 #define RTC_REG_SEC2    0
129 #define RTC_REG_SEC1    1
130 #define RTC_REG_MIN2    2
131 #define RTC_REG_MIN1    3
132 #define RTC_REG_HOUR2   4
133 #define RTC_REG_HOUR1   5
134 #define RTC_REG_WDAY    6
135 #define RTC_REG_DAY2    7
136 #define RTC_REG_DAY1    8
137 #define RTC_REG_MON2    9
138 #define RTC_REG_MON1    10
139 #define RTC_REG_YEAR2   11
140 #define RTC_REG_YEAR1   12
141
142 #define RTC_HOUR1_24HMODE 0x8
143
144 #define RTC_STAT_MASK   0xf0
145 #define RTC_STAT_RDY    0x40
146
147 static inline unsigned char hp300_rtc_read(unsigned char reg)
148 {
149         unsigned char s, ret;
150         unsigned long flags;
151
152         local_irq_save(flags);
153
154         while (rtc_busy());
155         rtc_command(RTC_SETREG);
156         while (rtc_busy());
157         rtc_write_data(reg);
158         while (rtc_busy());
159         rtc_command(RTC_READREG);
160
161         do {
162                 while (!rtc_data_available());
163                 s = rtc_status();
164                 ret = rtc_read_data();
165         } while ((s & RTC_STAT_MASK) != RTC_STAT_RDY);
166
167         local_irq_restore(flags);
168
169         return ret;
170 }
171
172 static inline unsigned char hp300_rtc_write(unsigned char reg,
173                                             unsigned char val)
174 {
175         unsigned char s, ret;
176         unsigned long flags;
177
178         local_irq_save(flags);
179
180         while (rtc_busy());
181         rtc_command(RTC_SETREG);
182         while (rtc_busy());
183         rtc_write_data((val << 4) | reg);
184         while (rtc_busy());
185         rtc_command(RTC_WRITEREG);
186         while (rtc_busy());
187         rtc_command(RTC_READREG);
188
189         do {
190                 while (!rtc_data_available());
191                 s = rtc_status();
192                 ret = rtc_read_data();
193         } while ((s & RTC_STAT_MASK) != RTC_STAT_RDY);
194
195         local_irq_restore(flags);
196
197         return ret;
198 }
199
200 static int hp300_hwclk(int op, struct rtc_time *t)
201 {
202         if (!op) { /* read */
203                 t->tm_sec  = hp300_rtc_read(RTC_REG_SEC1) * 10 +
204                         hp300_rtc_read(RTC_REG_SEC2);
205                 t->tm_min  = hp300_rtc_read(RTC_REG_MIN1) * 10 +
206                         hp300_rtc_read(RTC_REG_MIN2);
207                 t->tm_hour = (hp300_rtc_read(RTC_REG_HOUR1) & 3) * 10 +
208                         hp300_rtc_read(RTC_REG_HOUR2);
209                 t->tm_wday = -1;
210                 t->tm_mday = hp300_rtc_read(RTC_REG_DAY1) * 10 +
211                         hp300_rtc_read(RTC_REG_DAY2);
212                 t->tm_mon  = hp300_rtc_read(RTC_REG_MON1) * 10 +
213                         hp300_rtc_read(RTC_REG_MON2) - 1;
214                 t->tm_year = hp300_rtc_read(RTC_REG_YEAR1) * 10 +
215                         hp300_rtc_read(RTC_REG_YEAR2);
216                 if (t->tm_year <= 69)
217                         t->tm_year += 100;
218         } else {
219                 hp300_rtc_write(RTC_REG_SEC1, t->tm_sec / 10);
220                 hp300_rtc_write(RTC_REG_SEC2, t->tm_sec % 10);
221                 hp300_rtc_write(RTC_REG_MIN1, t->tm_min / 10);
222                 hp300_rtc_write(RTC_REG_MIN2, t->tm_min % 10);
223                 hp300_rtc_write(RTC_REG_HOUR1,
224                                 ((t->tm_hour / 10) & 3) | RTC_HOUR1_24HMODE);
225                 hp300_rtc_write(RTC_REG_HOUR2, t->tm_hour % 10);
226                 hp300_rtc_write(RTC_REG_DAY1, t->tm_mday / 10);
227                 hp300_rtc_write(RTC_REG_DAY2, t->tm_mday % 10);
228                 hp300_rtc_write(RTC_REG_MON1, (t->tm_mon + 1) / 10);
229                 hp300_rtc_write(RTC_REG_MON2, (t->tm_mon + 1) % 10);
230                 if (t->tm_year >= 100)
231                         t->tm_year -= 100;
232                 hp300_rtc_write(RTC_REG_YEAR1, t->tm_year / 10);
233                 hp300_rtc_write(RTC_REG_YEAR2, t->tm_year % 10);
234         }
235
236         return 0;
237 }
238
239 static unsigned int hp300_get_ss(void)
240 {
241         return hp300_rtc_read(RTC_REG_SEC1) * 10 +
242                 hp300_rtc_read(RTC_REG_SEC2);
243 }
244
245 static void __init hp300_init_IRQ(void)
246 {
247 }
248
249 void __init config_hp300(void)
250 {
251         mach_sched_init      = hp300_sched_init;
252         mach_init_IRQ        = hp300_init_IRQ;
253         mach_get_model       = hp300_get_model;
254         mach_gettimeoffset   = hp300_gettimeoffset;
255         mach_hwclk           = hp300_hwclk;
256         mach_get_ss          = hp300_get_ss;
257         mach_reset           = hp300_reset;
258 #ifdef CONFIG_HEARTBEAT
259         mach_heartbeat       = hp300_pulse;
260 #endif
261         mach_max_dma_address = 0xffffffff;
262
263         if (hp300_model >= HP_330 && hp300_model <= HP_433S && hp300_model != HP_350) {
264                 printk(KERN_INFO "Detected HP9000 model %s\n", hp300_models[hp300_model-HP_320]);
265                 strcat(hp300_model_name, hp300_models[hp300_model-HP_320]);
266         }
267         else {
268                 panic("Unknown HP9000 Model");
269         }
270 #ifdef CONFIG_SERIAL_8250_CONSOLE
271         hp300_setup_serial_console();
272 #endif
273 }