1 /* $Id: teleint.c,v 1.16.2.5 2004/01/19 15:31:50 keil Exp $
2 *
3 * low level stuff for TeleInt isdn cards
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 */
12
13 #include <linux/init.h>
14 #include "hisax.h"
15 #include "isac.h"
16 #include "hfc_2bs0.h"
17 #include "isdnl1.h"
18
19 static const char *TeleInt_revision = "$Revision: 1.16.2.5 $";
20
21 #define byteout(addr, val) outb(val, addr)
22 #define bytein(addr) inb(addr)
23
24 static inline u_char
readreg(unsigned int ale,unsigned int adr,u_char off)25 readreg(unsigned int ale, unsigned int adr, u_char off)
26 {
27 register u_char ret;
28 int max_delay = 2000;
29
30 byteout(ale, off);
31 ret = HFC_BUSY & bytein(ale);
32 while (ret && --max_delay)
33 ret = HFC_BUSY & bytein(ale);
34 if (!max_delay) {
35 printk(KERN_WARNING "TeleInt Busy not inactive\n");
36 return (0);
37 }
38 ret = bytein(adr);
39 return (ret);
40 }
41
42 static inline void
readfifo(unsigned int ale,unsigned int adr,u_char off,u_char * data,int size)43 readfifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
44 {
45 register u_char ret;
46 register int max_delay = 20000;
47 register int i;
48
49 byteout(ale, off);
50 for (i = 0; i < size; i++) {
51 ret = HFC_BUSY & bytein(ale);
52 while (ret && --max_delay)
53 ret = HFC_BUSY & bytein(ale);
54 if (!max_delay) {
55 printk(KERN_WARNING "TeleInt Busy not inactive\n");
56 return;
57 }
58 data[i] = bytein(adr);
59 }
60 }
61
62
63 static inline void
writereg(unsigned int ale,unsigned int adr,u_char off,u_char data)64 writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
65 {
66 register u_char ret;
67 int max_delay = 2000;
68
69 byteout(ale, off);
70 ret = HFC_BUSY & bytein(ale);
71 while (ret && --max_delay)
72 ret = HFC_BUSY & bytein(ale);
73 if (!max_delay) {
74 printk(KERN_WARNING "TeleInt Busy not inactive\n");
75 return;
76 }
77 byteout(adr, data);
78 }
79
80 static inline void
writefifo(unsigned int ale,unsigned int adr,u_char off,u_char * data,int size)81 writefifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
82 {
83 register u_char ret;
84 register int max_delay = 20000;
85 register int i;
86
87 byteout(ale, off);
88 for (i = 0; i < size; i++) {
89 ret = HFC_BUSY & bytein(ale);
90 while (ret && --max_delay)
91 ret = HFC_BUSY & bytein(ale);
92 if (!max_delay) {
93 printk(KERN_WARNING "TeleInt Busy not inactive\n");
94 return;
95 }
96 byteout(adr, data[i]);
97 }
98 }
99
100 /* Interface functions */
101
102 static u_char
ReadISAC(struct IsdnCardState * cs,u_char offset)103 ReadISAC(struct IsdnCardState *cs, u_char offset)
104 {
105 cs->hw.hfc.cip = offset;
106 return (readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, offset));
107 }
108
109 static void
WriteISAC(struct IsdnCardState * cs,u_char offset,u_char value)110 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
111 {
112 cs->hw.hfc.cip = offset;
113 writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, offset, value);
114 }
115
116 static void
ReadISACfifo(struct IsdnCardState * cs,u_char * data,int size)117 ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
118 {
119 cs->hw.hfc.cip = 0;
120 readfifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size);
121 }
122
123 static void
WriteISACfifo(struct IsdnCardState * cs,u_char * data,int size)124 WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
125 {
126 cs->hw.hfc.cip = 0;
127 writefifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size);
128 }
129
130 static u_char
ReadHFC(struct IsdnCardState * cs,int data,u_char reg)131 ReadHFC(struct IsdnCardState *cs, int data, u_char reg)
132 {
133 register u_char ret;
134
135 if (data) {
136 cs->hw.hfc.cip = reg;
137 byteout(cs->hw.hfc.addr | 1, reg);
138 ret = bytein(cs->hw.hfc.addr);
139 if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
140 debugl1(cs, "hfc RD %02x %02x", reg, ret);
141 } else
142 ret = bytein(cs->hw.hfc.addr | 1);
143 return (ret);
144 }
145
146 static void
WriteHFC(struct IsdnCardState * cs,int data,u_char reg,u_char value)147 WriteHFC(struct IsdnCardState *cs, int data, u_char reg, u_char value)
148 {
149 byteout(cs->hw.hfc.addr | 1, reg);
150 cs->hw.hfc.cip = reg;
151 if (data)
152 byteout(cs->hw.hfc.addr, value);
153 if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
154 debugl1(cs, "hfc W%c %02x %02x", data ? 'D' : 'C', reg, value);
155 }
156
157 static irqreturn_t
TeleInt_interrupt(int intno,void * dev_id)158 TeleInt_interrupt(int intno, void *dev_id)
159 {
160 struct IsdnCardState *cs = dev_id;
161 u_char val;
162 u_long flags;
163
164 spin_lock_irqsave(&cs->lock, flags);
165 val = readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_ISTA);
166 Start_ISAC:
167 if (val)
168 isac_interrupt(cs, val);
169 val = readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_ISTA);
170 if (val) {
171 if (cs->debug & L1_DEB_ISAC)
172 debugl1(cs, "ISAC IntStat after IntRoutine");
173 goto Start_ISAC;
174 }
175 writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0xFF);
176 writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0x0);
177 spin_unlock_irqrestore(&cs->lock, flags);
178 return IRQ_HANDLED;
179 }
180
181 static void
TeleInt_Timer(struct timer_list * t)182 TeleInt_Timer(struct timer_list *t)
183 {
184 struct IsdnCardState *cs = from_timer(cs, t, hw.hfc.timer);
185 int stat = 0;
186 u_long flags;
187
188 spin_lock_irqsave(&cs->lock, flags);
189 if (cs->bcs[0].mode) {
190 stat |= 1;
191 main_irq_hfc(&cs->bcs[0]);
192 }
193 if (cs->bcs[1].mode) {
194 stat |= 2;
195 main_irq_hfc(&cs->bcs[1]);
196 }
197 spin_unlock_irqrestore(&cs->lock, flags);
198 stat = HZ / 100;
199 if (!stat)
200 stat = 1;
201 cs->hw.hfc.timer.expires = jiffies + stat;
202 add_timer(&cs->hw.hfc.timer);
203 }
204
205 static void
release_io_TeleInt(struct IsdnCardState * cs)206 release_io_TeleInt(struct IsdnCardState *cs)
207 {
208 del_timer(&cs->hw.hfc.timer);
209 releasehfc(cs);
210 if (cs->hw.hfc.addr)
211 release_region(cs->hw.hfc.addr, 2);
212 }
213
214 static void
reset_TeleInt(struct IsdnCardState * cs)215 reset_TeleInt(struct IsdnCardState *cs)
216 {
217 printk(KERN_INFO "TeleInt: resetting card\n");
218 cs->hw.hfc.cirm |= HFC_RESET;
219 byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); /* Reset On */
220 mdelay(10);
221 cs->hw.hfc.cirm &= ~HFC_RESET;
222 byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); /* Reset Off */
223 mdelay(10);
224 }
225
226 static int
TeleInt_card_msg(struct IsdnCardState * cs,int mt,void * arg)227 TeleInt_card_msg(struct IsdnCardState *cs, int mt, void *arg)
228 {
229 u_long flags;
230 int delay;
231
232 switch (mt) {
233 case CARD_RESET:
234 spin_lock_irqsave(&cs->lock, flags);
235 reset_TeleInt(cs);
236 spin_unlock_irqrestore(&cs->lock, flags);
237 return (0);
238 case CARD_RELEASE:
239 release_io_TeleInt(cs);
240 return (0);
241 case CARD_INIT:
242 spin_lock_irqsave(&cs->lock, flags);
243 reset_TeleInt(cs);
244 inithfc(cs);
245 clear_pending_isac_ints(cs);
246 initisac(cs);
247 /* Reenable all IRQ */
248 cs->writeisac(cs, ISAC_MASK, 0);
249 cs->writeisac(cs, ISAC_CMDR, 0x41);
250 spin_unlock_irqrestore(&cs->lock, flags);
251 delay = HZ / 100;
252 if (!delay)
253 delay = 1;
254 cs->hw.hfc.timer.expires = jiffies + delay;
255 add_timer(&cs->hw.hfc.timer);
256 return (0);
257 case CARD_TEST:
258 return (0);
259 }
260 return (0);
261 }
262
setup_TeleInt(struct IsdnCard * card)263 int setup_TeleInt(struct IsdnCard *card)
264 {
265 struct IsdnCardState *cs = card->cs;
266 char tmp[64];
267
268 strcpy(tmp, TeleInt_revision);
269 printk(KERN_INFO "HiSax: TeleInt driver Rev. %s\n", HiSax_getrev(tmp));
270 if (cs->typ != ISDN_CTYPE_TELEINT)
271 return (0);
272
273 cs->hw.hfc.addr = card->para[1] & 0x3fe;
274 cs->irq = card->para[0];
275 cs->hw.hfc.cirm = HFC_CIRM;
276 cs->hw.hfc.isac_spcr = 0x00;
277 cs->hw.hfc.cip = 0;
278 cs->hw.hfc.ctmt = HFC_CTMT | HFC_CLTIMER;
279 cs->bcs[0].hw.hfc.send = NULL;
280 cs->bcs[1].hw.hfc.send = NULL;
281 cs->hw.hfc.fifosize = 7 * 1024 + 512;
282 timer_setup(&cs->hw.hfc.timer, TeleInt_Timer, 0);
283 if (!request_region(cs->hw.hfc.addr, 2, "TeleInt isdn")) {
284 printk(KERN_WARNING
285 "HiSax: TeleInt config port %x-%x already in use\n",
286 cs->hw.hfc.addr,
287 cs->hw.hfc.addr + 2);
288 return (0);
289 }
290 /* HW IO = IO */
291 byteout(cs->hw.hfc.addr, cs->hw.hfc.addr & 0xff);
292 byteout(cs->hw.hfc.addr | 1, ((cs->hw.hfc.addr & 0x300) >> 8) | 0x54);
293 switch (cs->irq) {
294 case 3:
295 cs->hw.hfc.cirm |= HFC_INTA;
296 break;
297 case 4:
298 cs->hw.hfc.cirm |= HFC_INTB;
299 break;
300 case 5:
301 cs->hw.hfc.cirm |= HFC_INTC;
302 break;
303 case 7:
304 cs->hw.hfc.cirm |= HFC_INTD;
305 break;
306 case 10:
307 cs->hw.hfc.cirm |= HFC_INTE;
308 break;
309 case 11:
310 cs->hw.hfc.cirm |= HFC_INTF;
311 break;
312 default:
313 printk(KERN_WARNING "TeleInt: wrong IRQ\n");
314 release_io_TeleInt(cs);
315 return (0);
316 }
317 byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm);
318 byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.ctmt);
319
320 printk(KERN_INFO "TeleInt: defined at 0x%x IRQ %d\n",
321 cs->hw.hfc.addr, cs->irq);
322
323 setup_isac(cs);
324 cs->readisac = &ReadISAC;
325 cs->writeisac = &WriteISAC;
326 cs->readisacfifo = &ReadISACfifo;
327 cs->writeisacfifo = &WriteISACfifo;
328 cs->BC_Read_Reg = &ReadHFC;
329 cs->BC_Write_Reg = &WriteHFC;
330 cs->cardmsg = &TeleInt_card_msg;
331 cs->irq_func = &TeleInt_interrupt;
332 ISACVersion(cs, "TeleInt:");
333 return (1);
334 }
335