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 static char *saphir_rev = "$Revision: 1.10.2.4 $";
22
23 #define byteout(addr, val) outb(val, addr)
24 #define bytein(addr) inb(addr)
25
26 #define ISAC_DATA 0
27 #define HSCX_DATA 1
28 #define ADDRESS_REG 2
29 #define IRQ_REG 3
30 #define SPARE_REG 4
31 #define RESET_REG 5
32
33 static inline u_char
readreg(unsigned int ale,unsigned int adr,u_char off)34 readreg(unsigned int ale, unsigned int adr, u_char off)
35 {
36 register u_char ret;
37
38 byteout(ale, off);
39 ret = bytein(adr);
40 return (ret);
41 }
42
43 static inline void
readfifo(unsigned int ale,unsigned int adr,u_char off,u_char * data,int size)44 readfifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
45 {
46 byteout(ale, off);
47 insb(adr, data, size);
48 }
49
50
51 static inline void
writereg(unsigned int ale,unsigned int adr,u_char off,u_char data)52 writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
53 {
54 byteout(ale, off);
55 byteout(adr, data);
56 }
57
58 static inline void
writefifo(unsigned int ale,unsigned int adr,u_char off,u_char * data,int size)59 writefifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
60 {
61 byteout(ale, off);
62 outsb(adr, data, size);
63 }
64
65 /* Interface functions */
66
67 static u_char
ReadISAC(struct IsdnCardState * cs,u_char offset)68 ReadISAC(struct IsdnCardState *cs, u_char offset)
69 {
70 return (readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset));
71 }
72
73 static void
WriteISAC(struct IsdnCardState * cs,u_char offset,u_char value)74 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
75 {
76 writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset, value);
77 }
78
79 static void
ReadISACfifo(struct IsdnCardState * cs,u_char * data,int size)80 ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
81 {
82 readfifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
83 }
84
85 static void
WriteISACfifo(struct IsdnCardState * cs,u_char * data,int size)86 WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
87 {
88 writefifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
89 }
90
91 static u_char
ReadHSCX(struct IsdnCardState * cs,int hscx,u_char offset)92 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
93 {
94 return (readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
95 offset + (hscx ? 0x40 : 0)));
96 }
97
98 static void
WriteHSCX(struct IsdnCardState * cs,int hscx,u_char offset,u_char value)99 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
100 {
101 writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
102 offset + (hscx ? 0x40 : 0), value);
103 }
104
105 #define READHSCX(cs, nr, reg) readreg(cs->hw.saphir.ale, \
106 cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0))
107 #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.saphir.ale, \
108 cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0), data)
109
110 #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.saphir.ale, \
111 cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
112
113 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.saphir.ale, \
114 cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
115
116 #include "hscx_irq.c"
117
118 static irqreturn_t
saphir_interrupt(int intno,void * dev_id)119 saphir_interrupt(int intno, void *dev_id)
120 {
121 struct IsdnCardState *cs = dev_id;
122 u_char val;
123 u_long flags;
124
125 spin_lock_irqsave(&cs->lock, flags);
126 val = readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
127 Start_HSCX:
128 if (val)
129 hscx_int_main(cs, val);
130 val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
131 Start_ISAC:
132 if (val)
133 isac_interrupt(cs, val);
134 val = readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
135 if (val) {
136 if (cs->debug & L1_DEB_HSCX)
137 debugl1(cs, "HSCX IntStat after IntRoutine");
138 goto Start_HSCX;
139 }
140 val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
141 if (val) {
142 if (cs->debug & L1_DEB_ISAC)
143 debugl1(cs, "ISAC IntStat after IntRoutine");
144 goto Start_ISAC;
145 }
146 /* Watchdog */
147 if (cs->hw.saphir.timer.function)
148 mod_timer(&cs->hw.saphir.timer, jiffies + 1 * HZ);
149 else
150 printk(KERN_WARNING "saphir: Spurious timer!\n");
151 writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0xFF);
152 writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0xFF);
153 writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0xFF);
154 writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0);
155 writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0);
156 writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0);
157 spin_unlock_irqrestore(&cs->lock, flags);
158 return IRQ_HANDLED;
159 }
160
161 static void
SaphirWatchDog(struct timer_list * t)162 SaphirWatchDog(struct timer_list *t)
163 {
164 struct IsdnCardState *cs = from_timer(cs, t, hw.saphir.timer);
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
release_io_saphir(struct IsdnCardState * cs)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
saphir_reset(struct IsdnCardState * cs)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
saphir_card_msg(struct IsdnCardState * cs,int mt,void * arg)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
setup_saphir(struct IsdnCard * card)244 int setup_saphir(struct IsdnCard *card)
245 {
246 struct IsdnCardState *cs = card->cs;
247 char tmp[64];
248
249 strcpy(tmp, saphir_rev);
250 printk(KERN_INFO "HiSax: HST Saphir driver Rev. %s\n", HiSax_getrev(tmp));
251 if (cs->typ != ISDN_CTYPE_HSTSAPHIR)
252 return (0);
253
254 /* IO-Ports */
255 cs->hw.saphir.cfg_reg = card->para[1];
256 cs->hw.saphir.isac = card->para[1] + ISAC_DATA;
257 cs->hw.saphir.hscx = card->para[1] + HSCX_DATA;
258 cs->hw.saphir.ale = card->para[1] + ADDRESS_REG;
259 cs->irq = card->para[0];
260 if (!request_region(cs->hw.saphir.cfg_reg, 6, "saphir")) {
261 printk(KERN_WARNING
262 "HiSax: HST Saphir config port %x-%x already in use\n",
263 cs->hw.saphir.cfg_reg,
264 cs->hw.saphir.cfg_reg + 5);
265 return (0);
266 }
267
268 printk(KERN_INFO "HiSax: HST Saphir config irq:%d io:0x%X\n",
269 cs->irq, cs->hw.saphir.cfg_reg);
270
271 setup_isac(cs);
272 timer_setup(&cs->hw.saphir.timer, SaphirWatchDog, 0);
273 cs->hw.saphir.timer.expires = jiffies + 4 * HZ;
274 add_timer(&cs->hw.saphir.timer);
275 if (saphir_reset(cs)) {
276 release_io_saphir(cs);
277 return (0);
278 }
279 cs->readisac = &ReadISAC;
280 cs->writeisac = &WriteISAC;
281 cs->readisacfifo = &ReadISACfifo;
282 cs->writeisacfifo = &WriteISACfifo;
283 cs->BC_Read_Reg = &ReadHSCX;
284 cs->BC_Write_Reg = &WriteHSCX;
285 cs->BC_Send_Data = &hscx_fill_fifo;
286 cs->cardmsg = &saphir_card_msg;
287 cs->irq_func = &saphir_interrupt;
288 ISACVersion(cs, "saphir:");
289 if (HscxVersion(cs, "saphir:")) {
290 printk(KERN_WARNING
291 "saphir: wrong HSCX versions check IO address\n");
292 release_io_saphir(cs);
293 return (0);
294 }
295 return (1);
296 }
297
