Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
[linux-2.6] / drivers / isdn / hisax / saphir.c
1 /* $Id: saphir.c,v 1.10.2.4 2004/01/13 23:48:39 keil Exp $
2  *
3  * low level stuff for HST Saphir 1
4  *
5  * Author       Karsten Keil
6  * Copyright    by Karsten Keil      <keil@isdn4linux.de>
7  * 
8  * This software may be used and distributed according to the terms
9  * of the GNU General Public License, incorporated herein by reference.
10  *
11  * Thanks to    HST High Soft Tech GmbH
12  *
13  */
14
15 #include <linux/init.h>
16 #include "hisax.h"
17 #include "isac.h"
18 #include "hscx.h"
19 #include "isdnl1.h"
20
21 extern const char *CardType[];
22 static char *saphir_rev = "$Revision: 1.10.2.4 $";
23
24 #define byteout(addr,val) outb(val,addr)
25 #define bytein(addr) inb(addr)
26
27 #define ISAC_DATA       0
28 #define HSCX_DATA       1
29 #define ADDRESS_REG     2
30 #define IRQ_REG         3
31 #define SPARE_REG       4
32 #define RESET_REG       5
33
34 static inline u_char
35 readreg(unsigned int ale, unsigned int adr, u_char off)
36 {
37         register u_char ret;
38
39         byteout(ale, off);
40         ret = bytein(adr);
41         return (ret);
42 }
43
44 static inline void
45 readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
46 {
47         byteout(ale, off);
48         insb(adr, data, size);
49 }
50
51
52 static inline void
53 writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
54 {
55         byteout(ale, off);
56         byteout(adr, data);
57 }
58
59 static inline void
60 writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
61 {
62         byteout(ale, off);
63         outsb(adr, data, size);
64 }
65
66 /* Interface functions */
67
68 static u_char
69 ReadISAC(struct IsdnCardState *cs, u_char offset)
70 {
71         return (readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset));
72 }
73
74 static void
75 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
76 {
77         writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset, value);
78 }
79
80 static void
81 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
82 {
83         readfifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
84 }
85
86 static void
87 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
88 {
89         writefifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
90 }
91
92 static u_char
93 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
94 {
95         return (readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
96                 offset + (hscx ? 0x40 : 0)));
97 }
98
99 static void
100 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
101 {
102         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
103                 offset + (hscx ? 0x40 : 0), value);
104 }
105
106 #define READHSCX(cs, nr, reg) readreg(cs->hw.saphir.ale, \
107                 cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0))
108 #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.saphir.ale, \
109                 cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0), data)
110
111 #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.saphir.ale, \
112                 cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
113
114 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.saphir.ale, \
115                 cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
116
117 #include "hscx_irq.c"
118
119 static irqreturn_t
120 saphir_interrupt(int intno, void *dev_id)
121 {
122         struct IsdnCardState *cs = dev_id;
123         u_char val;
124         u_long flags;
125
126         spin_lock_irqsave(&cs->lock, flags);
127         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
128       Start_HSCX:
129         if (val)
130                 hscx_int_main(cs, val);
131         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
132       Start_ISAC:
133         if (val)
134                 isac_interrupt(cs, val);
135         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
136         if (val) {
137                 if (cs->debug & L1_DEB_HSCX)
138                         debugl1(cs, "HSCX IntStat after IntRoutine");
139                 goto Start_HSCX;
140         }
141         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
142         if (val) {
143                 if (cs->debug & L1_DEB_ISAC)
144                         debugl1(cs, "ISAC IntStat after IntRoutine");
145                 goto Start_ISAC;
146         }
147         /* Watchdog */
148         if (cs->hw.saphir.timer.function) 
149                 mod_timer(&cs->hw.saphir.timer, jiffies+1*HZ);
150         else
151                 printk(KERN_WARNING "saphir: Spurious timer!\n");
152         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0xFF);
153         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0xFF);
154         writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0xFF);
155         writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0);
156         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0);
157         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0);
158         spin_unlock_irqrestore(&cs->lock, flags);
159         return IRQ_HANDLED;
160 }
161
162 static void
163 SaphirWatchDog(struct IsdnCardState *cs)
164 {
165         u_long flags;
166
167         spin_lock_irqsave(&cs->lock, flags);
168         /* 5 sec WatchDog, so read at least every 4 sec */
169         cs->readisac(cs, ISAC_RBCH);
170         spin_unlock_irqrestore(&cs->lock, flags);
171         mod_timer(&cs->hw.saphir.timer, jiffies+1*HZ);
172 }
173
174 static void
175 release_io_saphir(struct IsdnCardState *cs)
176 {
177         byteout(cs->hw.saphir.cfg_reg + IRQ_REG, 0xff);
178         del_timer(&cs->hw.saphir.timer);
179         cs->hw.saphir.timer.function = NULL;
180         if (cs->hw.saphir.cfg_reg)
181                 release_region(cs->hw.saphir.cfg_reg, 6);
182 }
183
184 static int
185 saphir_reset(struct IsdnCardState *cs)
186 {
187         u_char irq_val;
188
189         switch(cs->irq) {
190                 case 5: irq_val = 0;
191                         break;
192                 case 3: irq_val = 1;
193                         break;
194                 case 11:
195                         irq_val = 2;
196                         break;
197                 case 12:
198                         irq_val = 3;
199                         break;
200                 case 15:
201                         irq_val = 4;
202                         break;
203                 default:
204                         printk(KERN_WARNING "HiSax: saphir wrong IRQ %d\n",
205                                 cs->irq);
206                         return (1);
207         }
208         byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
209         byteout(cs->hw.saphir.cfg_reg + RESET_REG, 1);
210         mdelay(10);
211         byteout(cs->hw.saphir.cfg_reg + RESET_REG, 0);
212         mdelay(10);
213         byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
214         byteout(cs->hw.saphir.cfg_reg + SPARE_REG, 0x02);
215         return (0);
216 }
217
218 static int
219 saphir_card_msg(struct IsdnCardState *cs, int mt, void *arg)
220 {
221         u_long flags;
222
223         switch (mt) {
224                 case CARD_RESET:
225                         spin_lock_irqsave(&cs->lock, flags);
226                         saphir_reset(cs);
227                         spin_unlock_irqrestore(&cs->lock, flags);
228                         return(0);
229                 case CARD_RELEASE:
230                         release_io_saphir(cs);
231                         return(0);
232                 case CARD_INIT:
233                         spin_lock_irqsave(&cs->lock, flags);
234                         inithscxisac(cs, 3);
235                         spin_unlock_irqrestore(&cs->lock, flags);
236                         return(0);
237                 case CARD_TEST:
238                         return(0);
239         }
240         return(0);
241 }
242
243
244 int __devinit
245 setup_saphir(struct IsdnCard *card)
246 {
247         struct IsdnCardState *cs = card->cs;
248         char tmp[64];
249
250         strcpy(tmp, saphir_rev);
251         printk(KERN_INFO "HiSax: HST Saphir driver Rev. %s\n", HiSax_getrev(tmp));
252         if (cs->typ != ISDN_CTYPE_HSTSAPHIR)
253                 return (0);
254
255         /* IO-Ports */
256         cs->hw.saphir.cfg_reg = card->para[1];
257         cs->hw.saphir.isac = card->para[1] + ISAC_DATA;
258         cs->hw.saphir.hscx = card->para[1] + HSCX_DATA;
259         cs->hw.saphir.ale = card->para[1] + ADDRESS_REG;
260         cs->irq = card->para[0];
261         if (!request_region(cs->hw.saphir.cfg_reg, 6, "saphir")) {
262                 printk(KERN_WARNING
263                         "HiSax: %s config port %x-%x already in use\n",
264                         CardType[card->typ],
265                         cs->hw.saphir.cfg_reg,
266                         cs->hw.saphir.cfg_reg + 5);
267                 return (0);
268         }
269
270         printk(KERN_INFO "HiSax: %s config irq:%d io:0x%X\n",
271                 CardType[cs->typ], cs->irq, cs->hw.saphir.cfg_reg);
272
273         setup_isac(cs);
274         cs->hw.saphir.timer.function = (void *) SaphirWatchDog;
275         cs->hw.saphir.timer.data = (long) cs;
276         init_timer(&cs->hw.saphir.timer);
277         cs->hw.saphir.timer.expires = jiffies + 4*HZ;
278         add_timer(&cs->hw.saphir.timer);
279         if (saphir_reset(cs)) {
280                 release_io_saphir(cs);
281                 return (0);
282         }
283         cs->readisac = &ReadISAC;
284         cs->writeisac = &WriteISAC;
285         cs->readisacfifo = &ReadISACfifo;
286         cs->writeisacfifo = &WriteISACfifo;
287         cs->BC_Read_Reg = &ReadHSCX;
288         cs->BC_Write_Reg = &WriteHSCX;
289         cs->BC_Send_Data = &hscx_fill_fifo;
290         cs->cardmsg = &saphir_card_msg;
291         cs->irq_func = &saphir_interrupt;
292         ISACVersion(cs, "saphir:");
293         if (HscxVersion(cs, "saphir:")) {
294                 printk(KERN_WARNING
295                     "saphir: wrong HSCX versions check IO address\n");
296                 release_io_saphir(cs);
297                 return (0);
298         }
299         return (1);
300 }