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