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path: root/drivers/isdn/hisax/teleint.c
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-rw-r--r--drivers/isdn/hisax/teleint.c339
1 files changed, 339 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/teleint.c b/drivers/isdn/hisax/teleint.c
new file mode 100644
index 000000000000..ef8984c5f1f7
--- /dev/null
+++ b/drivers/isdn/hisax/teleint.c
@@ -0,0 +1,339 @@
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
19extern const char *CardType[];
20
21const char *TeleInt_revision = "$Revision: 1.16.2.5 $";
22
23#define byteout(addr,val) outb(val,addr)
24#define bytein(addr) inb(addr)
25
26static inline u_char
27readreg(unsigned int ale, unsigned int adr, u_char off)
28{
29 register u_char ret;
30 int max_delay = 2000;
31
32 byteout(ale, off);
33 ret = HFC_BUSY & bytein(ale);
34 while (ret && --max_delay)
35 ret = HFC_BUSY & bytein(ale);
36 if (!max_delay) {
37 printk(KERN_WARNING "TeleInt Busy not inactive\n");
38 return (0);
39 }
40 ret = bytein(adr);
41 return (ret);
42}
43
44static inline void
45readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
46{
47 register u_char ret;
48 register int max_delay = 20000;
49 register int i;
50
51 byteout(ale, off);
52 for (i = 0; i<size; i++) {
53 ret = HFC_BUSY & bytein(ale);
54 while (ret && --max_delay)
55 ret = HFC_BUSY & bytein(ale);
56 if (!max_delay) {
57 printk(KERN_WARNING "TeleInt Busy not inactive\n");
58 return;
59 }
60 data[i] = bytein(adr);
61 }
62}
63
64
65static inline void
66writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
67{
68 register u_char ret;
69 int max_delay = 2000;
70
71 byteout(ale, off);
72 ret = HFC_BUSY & bytein(ale);
73 while (ret && --max_delay)
74 ret = HFC_BUSY & bytein(ale);
75 if (!max_delay) {
76 printk(KERN_WARNING "TeleInt Busy not inactive\n");
77 return;
78 }
79 byteout(adr, data);
80}
81
82static inline void
83writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
84{
85 register u_char ret;
86 register int max_delay = 20000;
87 register int i;
88
89 byteout(ale, off);
90 for (i = 0; i<size; i++) {
91 ret = HFC_BUSY & bytein(ale);
92 while (ret && --max_delay)
93 ret = HFC_BUSY & bytein(ale);
94 if (!max_delay) {
95 printk(KERN_WARNING "TeleInt Busy not inactive\n");
96 return;
97 }
98 byteout(adr, data[i]);
99 }
100}
101
102/* Interface functions */
103
104static u_char
105ReadISAC(struct IsdnCardState *cs, u_char offset)
106{
107 cs->hw.hfc.cip = offset;
108 return (readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, offset));
109}
110
111static void
112WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
113{
114 cs->hw.hfc.cip = offset;
115 writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, offset, value);
116}
117
118static void
119ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
120{
121 cs->hw.hfc.cip = 0;
122 readfifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size);
123}
124
125static void
126WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
127{
128 cs->hw.hfc.cip = 0;
129 writefifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size);
130}
131
132static u_char
133ReadHFC(struct IsdnCardState *cs, int data, u_char reg)
134{
135 register u_char ret;
136
137 if (data) {
138 cs->hw.hfc.cip = reg;
139 byteout(cs->hw.hfc.addr | 1, reg);
140 ret = bytein(cs->hw.hfc.addr);
141 if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
142 debugl1(cs, "hfc RD %02x %02x", reg, ret);
143 } else
144 ret = bytein(cs->hw.hfc.addr | 1);
145 return (ret);
146}
147
148static void
149WriteHFC(struct IsdnCardState *cs, int data, u_char reg, u_char value)
150{
151 byteout(cs->hw.hfc.addr | 1, reg);
152 cs->hw.hfc.cip = reg;
153 if (data)
154 byteout(cs->hw.hfc.addr, value);
155 if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
156 debugl1(cs, "hfc W%c %02x %02x", data ? 'D' : 'C', reg, value);
157}
158
159static irqreturn_t
160TeleInt_interrupt(int intno, void *dev_id, struct pt_regs *regs)
161{
162 struct IsdnCardState *cs = dev_id;
163 u_char val;
164 u_long flags;
165
166 spin_lock_irqsave(&cs->lock, flags);
167 val = readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_ISTA);
168 Start_ISAC:
169 if (val)
170 isac_interrupt(cs, val);
171 val = readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_ISTA);
172 if (val) {
173 if (cs->debug & L1_DEB_ISAC)
174 debugl1(cs, "ISAC IntStat after IntRoutine");
175 goto Start_ISAC;
176 }
177 writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0xFF);
178 writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0x0);
179 spin_unlock_irqrestore(&cs->lock, flags);
180 return IRQ_HANDLED;
181}
182
183static void
184TeleInt_Timer(struct IsdnCardState *cs)
185{
186 int stat = 0;
187 u_long flags;
188
189 spin_lock_irqsave(&cs->lock, flags);
190 if (cs->bcs[0].mode) {
191 stat |= 1;
192 main_irq_hfc(&cs->bcs[0]);
193 }
194 if (cs->bcs[1].mode) {
195 stat |= 2;
196 main_irq_hfc(&cs->bcs[1]);
197 }
198 spin_unlock_irqrestore(&cs->lock, flags);
199 stat = HZ/100;
200 if (!stat)
201 stat = 1;
202 cs->hw.hfc.timer.expires = jiffies + stat;
203 add_timer(&cs->hw.hfc.timer);
204}
205
206void
207release_io_TeleInt(struct IsdnCardState *cs)
208{
209 del_timer(&cs->hw.hfc.timer);
210 releasehfc(cs);
211 if (cs->hw.hfc.addr)
212 release_region(cs->hw.hfc.addr, 2);
213}
214
215static void
216reset_TeleInt(struct IsdnCardState *cs)
217{
218 printk(KERN_INFO "TeleInt: resetting card\n");
219 cs->hw.hfc.cirm |= HFC_RESET;
220 byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); /* Reset On */
221 mdelay(10);
222 cs->hw.hfc.cirm &= ~HFC_RESET;
223 byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); /* Reset Off */
224 mdelay(10);
225}
226
227static int
228TeleInt_card_msg(struct IsdnCardState *cs, int mt, void *arg)
229{
230 u_long flags;
231 int delay;
232
233 switch (mt) {
234 case CARD_RESET:
235 spin_lock_irqsave(&cs->lock, flags);
236 reset_TeleInt(cs);
237 spin_unlock_irqrestore(&cs->lock, flags);
238 return(0);
239 case CARD_RELEASE:
240 release_io_TeleInt(cs);
241 return(0);
242 case CARD_INIT:
243 spin_lock_irqsave(&cs->lock, flags);
244 reset_TeleInt(cs);
245 inithfc(cs);
246 clear_pending_isac_ints(cs);
247 initisac(cs);
248 /* Reenable all IRQ */
249 cs->writeisac(cs, ISAC_MASK, 0);
250 cs->writeisac(cs, ISAC_CMDR, 0x41);
251 spin_unlock_irqrestore(&cs->lock, flags);
252 delay = HZ/100;
253 if (!delay)
254 delay = 1;
255 cs->hw.hfc.timer.expires = jiffies + delay;
256 add_timer(&cs->hw.hfc.timer);
257 return(0);
258 case CARD_TEST:
259 return(0);
260 }
261 return(0);
262}
263
264int __init
265setup_TeleInt(struct IsdnCard *card)
266{
267 struct IsdnCardState *cs = card->cs;
268 char tmp[64];
269
270 strcpy(tmp, TeleInt_revision);
271 printk(KERN_INFO "HiSax: TeleInt driver Rev. %s\n", HiSax_getrev(tmp));
272 if (cs->typ != ISDN_CTYPE_TELEINT)
273 return (0);
274
275 cs->hw.hfc.addr = card->para[1] & 0x3fe;
276 cs->irq = card->para[0];
277 cs->hw.hfc.cirm = HFC_CIRM;
278 cs->hw.hfc.isac_spcr = 0x00;
279 cs->hw.hfc.cip = 0;
280 cs->hw.hfc.ctmt = HFC_CTMT | HFC_CLTIMER;
281 cs->bcs[0].hw.hfc.send = NULL;
282 cs->bcs[1].hw.hfc.send = NULL;
283 cs->hw.hfc.fifosize = 7 * 1024 + 512;
284 cs->hw.hfc.timer.function = (void *) TeleInt_Timer;
285 cs->hw.hfc.timer.data = (long) cs;
286 init_timer(&cs->hw.hfc.timer);
287 if (!request_region(cs->hw.hfc.addr, 2, "TeleInt isdn")) {
288 printk(KERN_WARNING
289 "HiSax: %s config port %x-%x already in use\n",
290 CardType[card->typ],
291 cs->hw.hfc.addr,
292 cs->hw.hfc.addr + 2);
293 return (0);
294 }
295 /* HW IO = IO */
296 byteout(cs->hw.hfc.addr, cs->hw.hfc.addr & 0xff);
297 byteout(cs->hw.hfc.addr | 1, ((cs->hw.hfc.addr & 0x300) >> 8) | 0x54);
298 switch (cs->irq) {
299 case 3:
300 cs->hw.hfc.cirm |= HFC_INTA;
301 break;
302 case 4:
303 cs->hw.hfc.cirm |= HFC_INTB;
304 break;
305 case 5:
306 cs->hw.hfc.cirm |= HFC_INTC;
307 break;
308 case 7:
309 cs->hw.hfc.cirm |= HFC_INTD;
310 break;
311 case 10:
312 cs->hw.hfc.cirm |= HFC_INTE;
313 break;
314 case 11:
315 cs->hw.hfc.cirm |= HFC_INTF;
316 break;
317 default:
318 printk(KERN_WARNING "TeleInt: wrong IRQ\n");
319 release_io_TeleInt(cs);
320 return (0);
321 }
322 byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm);
323 byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.ctmt);
324
325 printk(KERN_INFO "TeleInt: defined at 0x%x IRQ %d\n",
326 cs->hw.hfc.addr, cs->irq);
327
328 setup_isac(cs);
329 cs->readisac = &ReadISAC;
330 cs->writeisac = &WriteISAC;
331 cs->readisacfifo = &ReadISACfifo;
332 cs->writeisacfifo = &WriteISACfifo;
333 cs->BC_Read_Reg = &ReadHFC;
334 cs->BC_Write_Reg = &WriteHFC;
335 cs->cardmsg = &TeleInt_card_msg;
336 cs->irq_func = &TeleInt_interrupt;
337 ISACVersion(cs, "TeleInt:");
338 return (1);
339}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-29 03:35:13 -0500