[PATCH] Fix typo in drivers/isdn/hisax/q931.c
[linux-2.6] / drivers / isdn / hisax / s0box.c
1 /* $Id: s0box.c,v 2.6.2.4 2004/01/13 23:48:39 keil Exp $
2  *
3  * low level stuff for Creatix S0BOX
4  *
5  * Author       Enrik Berkhan
6  * Copyright    by Enrik Berkhan <enrik@starfleet.inka.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 "hscx.h"
17 #include "isdnl1.h"
18
19 extern const char *CardType[];
20 static const char *s0box_revision = "$Revision: 2.6.2.4 $";
21
22 static inline void
23 writereg(unsigned int padr, signed int addr, u_char off, u_char val) {
24         outb_p(0x1c,padr+2);
25         outb_p(0x14,padr+2);
26         outb_p((addr+off)&0x7f,padr);
27         outb_p(0x16,padr+2);
28         outb_p(val,padr);
29         outb_p(0x17,padr+2);
30         outb_p(0x14,padr+2);
31         outb_p(0x1c,padr+2);
32 }
33
34 static u_char nibtab[] = { 1, 9, 5, 0xd, 3, 0xb, 7, 0xf,
35                          0, 0, 0, 0, 0, 0, 0, 0,
36                          0, 8, 4, 0xc, 2, 0xa, 6, 0xe } ;
37
38 static inline u_char
39 readreg(unsigned int padr, signed int addr, u_char off) {
40         register u_char n1, n2;
41
42         outb_p(0x1c,padr+2);
43         outb_p(0x14,padr+2);
44         outb_p((addr+off)|0x80,padr);
45         outb_p(0x16,padr+2);
46         outb_p(0x17,padr+2);
47         n1 = (inb_p(padr+1) >> 3) & 0x17;
48         outb_p(0x16,padr+2);
49         n2 = (inb_p(padr+1) >> 3) & 0x17;
50         outb_p(0x14,padr+2);
51         outb_p(0x1c,padr+2);
52         return nibtab[n1] | (nibtab[n2] << 4);
53 }
54
55 static inline void
56 read_fifo(unsigned int padr, signed int adr, u_char * data, int size)
57 {
58         int i;
59         register u_char n1, n2;
60         
61         outb_p(0x1c, padr+2);
62         outb_p(0x14, padr+2);
63         outb_p(adr|0x80, padr);
64         outb_p(0x16, padr+2);
65         for (i=0; i<size; i++) {
66                 outb_p(0x17, padr+2);
67                 n1 = (inb_p(padr+1) >> 3) & 0x17;
68                 outb_p(0x16,padr+2);
69                 n2 = (inb_p(padr+1) >> 3) & 0x17;
70                 *(data++)=nibtab[n1] | (nibtab[n2] << 4);
71         }
72         outb_p(0x14,padr+2);
73         outb_p(0x1c,padr+2);
74         return;
75 }
76
77 static inline void
78 write_fifo(unsigned int padr, signed int adr, u_char * data, int size)
79 {
80         int i;
81         outb_p(0x1c, padr+2);
82         outb_p(0x14, padr+2);
83         outb_p(adr&0x7f, padr);
84         for (i=0; i<size; i++) {
85                 outb_p(0x16, padr+2);
86                 outb_p(*(data++), padr);
87                 outb_p(0x17, padr+2);
88         }
89         outb_p(0x14,padr+2);
90         outb_p(0x1c,padr+2);
91         return;
92 }
93
94 /* Interface functions */
95
96 static u_char
97 ReadISAC(struct IsdnCardState *cs, u_char offset)
98 {
99         return (readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, offset));
100 }
101
102 static void
103 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
104 {
105         writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, offset, value);
106 }
107
108 static void
109 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
110 {
111         read_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.isacfifo, data, size);
112 }
113
114 static void
115 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
116 {
117         write_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.isacfifo, data, size);
118 }
119
120 static u_char
121 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
122 {
123         return (readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[hscx], offset));
124 }
125
126 static void
127 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
128 {
129         writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[hscx], offset, value);
130 }
131
132 /*
133  * fast interrupt HSCX stuff goes here
134  */
135
136 #define READHSCX(cs, nr, reg) readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[nr], reg)
137 #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[nr], reg, data)
138 #define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscxfifo[nr], ptr, cnt)
139 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscxfifo[nr], ptr, cnt)
140
141 #include "hscx_irq.c"
142
143 static irqreturn_t
144 s0box_interrupt(int intno, void *dev_id, struct pt_regs *regs)
145 {
146 #define MAXCOUNT 5
147         struct IsdnCardState *cs = dev_id;
148         u_char val;
149         u_long flags;
150         int count = 0;
151
152         spin_lock_irqsave(&cs->lock, flags);
153         val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_ISTA);
154       Start_HSCX:
155         if (val)
156                 hscx_int_main(cs, val);
157         val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_ISTA);
158       Start_ISAC:
159         if (val)
160                 isac_interrupt(cs, val);
161         count++;
162         val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_ISTA);
163         if (val && count < MAXCOUNT) {
164                 if (cs->debug & L1_DEB_HSCX)
165                         debugl1(cs, "HSCX IntStat after IntRoutine");
166                 goto Start_HSCX;
167         }
168         val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_ISTA);
169         if (val && count < MAXCOUNT) {
170                 if (cs->debug & L1_DEB_ISAC)
171                         debugl1(cs, "ISAC IntStat after IntRoutine");
172                 goto Start_ISAC;
173         }
174         if (count >= MAXCOUNT)
175                 printk(KERN_WARNING "S0Box: more than %d loops in s0box_interrupt\n", count);
176         writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[0], HSCX_MASK, 0xFF);
177         writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_MASK, 0xFF);
178         writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_MASK, 0xFF);
179         writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_MASK, 0x0);
180         writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[0], HSCX_MASK, 0x0);
181         writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_MASK, 0x0);
182         spin_unlock_irqrestore(&cs->lock, flags);
183         return IRQ_HANDLED;
184 }
185
186 static void
187 release_io_s0box(struct IsdnCardState *cs)
188 {
189         release_region(cs->hw.teles3.cfg_reg, 8);
190 }
191
192 static int
193 S0Box_card_msg(struct IsdnCardState *cs, int mt, void *arg)
194 {
195         u_long flags;
196
197         switch (mt) {
198                 case CARD_RESET:
199                         break;
200                 case CARD_RELEASE:
201                         release_io_s0box(cs);
202                         break;
203                 case CARD_INIT:
204                         spin_lock_irqsave(&cs->lock, flags);
205                         inithscxisac(cs, 3);
206                         spin_unlock_irqrestore(&cs->lock, flags);
207                         break;
208                 case CARD_TEST:
209                         break;
210         }
211         return(0);
212 }
213
214 int __init
215 setup_s0box(struct IsdnCard *card)
216 {
217         struct IsdnCardState *cs = card->cs;
218         char tmp[64];
219
220         strcpy(tmp, s0box_revision);
221         printk(KERN_INFO "HiSax: S0Box IO driver Rev. %s\n", HiSax_getrev(tmp));
222         if (cs->typ != ISDN_CTYPE_S0BOX)
223                 return (0);
224
225         cs->hw.teles3.cfg_reg = card->para[1];
226         cs->hw.teles3.hscx[0] = -0x20;
227         cs->hw.teles3.hscx[1] = 0x0;
228         cs->hw.teles3.isac = 0x20;
229         cs->hw.teles3.isacfifo = cs->hw.teles3.isac + 0x3e;
230         cs->hw.teles3.hscxfifo[0] = cs->hw.teles3.hscx[0] + 0x3e;
231         cs->hw.teles3.hscxfifo[1] = cs->hw.teles3.hscx[1] + 0x3e;
232         cs->irq = card->para[0];
233         if (!request_region(cs->hw.teles3.cfg_reg,8, "S0Box parallel I/O")) {
234                 printk(KERN_WARNING
235                        "HiSax: %s ports %x-%x already in use\n",
236                        CardType[cs->typ],
237                        cs->hw.teles3.cfg_reg,
238                        cs->hw.teles3.cfg_reg + 7);
239                 return 0;
240         }
241         printk(KERN_INFO
242                 "HiSax: %s config irq:%d isac:0x%x  cfg:0x%x\n",
243                 CardType[cs->typ], cs->irq,
244                 cs->hw.teles3.isac, cs->hw.teles3.cfg_reg);
245         printk(KERN_INFO
246                 "HiSax: hscx A:0x%x  hscx B:0x%x\n",
247                 cs->hw.teles3.hscx[0], cs->hw.teles3.hscx[1]);
248         setup_isac(cs);
249         cs->readisac = &ReadISAC;
250         cs->writeisac = &WriteISAC;
251         cs->readisacfifo = &ReadISACfifo;
252         cs->writeisacfifo = &WriteISACfifo;
253         cs->BC_Read_Reg = &ReadHSCX;
254         cs->BC_Write_Reg = &WriteHSCX;
255         cs->BC_Send_Data = &hscx_fill_fifo;
256         cs->cardmsg = &S0Box_card_msg;
257         cs->irq_func = &s0box_interrupt;
258         ISACVersion(cs, "S0Box:");
259         if (HscxVersion(cs, "S0Box:")) {
260                 printk(KERN_WARNING
261                        "S0Box: wrong HSCX versions check IO address\n");
262                 release_io_s0box(cs);
263                 return (0);
264         }
265         return (1);
266 }