[ISDN] Hisax: eliminate many unnecessary references to CardType[]
[linux-2.6.git] / drivers / isdn / hisax / mic.c
1 /* $Id: mic.c,v 1.12.2.4 2004/01/13 23:48:39 keil Exp $
2  *
3  * low level stuff for mic cards
4  *
5  * Author       Stephan von Krawczynski
6  * Copyright    by Stephan von Krawczynski <skraw@ithnet.com>
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 *mic_revision = "$Revision: 1.12.2.4 $";
20
21 #define byteout(addr,val) outb(val,addr)
22 #define bytein(addr) inb(addr)
23
24 #define MIC_ISAC        2
25 #define MIC_HSCX        1
26 #define MIC_ADR         7
27
28 /* CARD_ADR (Write) */
29 #define MIC_RESET      0x3      /* same as DOS driver */
30
31 static inline u_char
32 readreg(unsigned int ale, unsigned int adr, u_char off)
33 {
34         register u_char ret;
35
36         byteout(ale, off);
37         ret = bytein(adr);
38         return (ret);
39 }
40
41 static inline void
42 readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
43 {
44         byteout(ale, off);
45         insb(adr, data, size);
46 }
47
48
49 static inline void
50 writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
51 {
52         byteout(ale, off);
53         byteout(adr, data);
54 }
55
56 static inline void
57 writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
58 {
59         byteout(ale, off);
60         outsb(adr, data, size);
61 }
62
63 /* Interface functions */
64
65 static u_char
66 ReadISAC(struct IsdnCardState *cs, u_char offset)
67 {
68         return (readreg(cs->hw.mic.adr, cs->hw.mic.isac, offset));
69 }
70
71 static void
72 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
73 {
74         writereg(cs->hw.mic.adr, cs->hw.mic.isac, offset, value);
75 }
76
77 static void
78 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
79 {
80         readfifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
81 }
82
83 static void
84 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
85 {
86         writefifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
87 }
88
89 static u_char
90 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
91 {
92         return (readreg(cs->hw.mic.adr,
93                         cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0)));
94 }
95
96 static void
97 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
98 {
99         writereg(cs->hw.mic.adr,
100                  cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0), value);
101 }
102
103 /*
104  * fast interrupt HSCX stuff goes here
105  */
106
107 #define READHSCX(cs, nr, reg) readreg(cs->hw.mic.adr, \
108                 cs->hw.mic.hscx, reg + (nr ? 0x40 : 0))
109 #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.mic.adr, \
110                 cs->hw.mic.hscx, reg + (nr ? 0x40 : 0), data)
111
112 #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.mic.adr, \
113                 cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt)
114
115 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.mic.adr, \
116                 cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt)
117
118 #include "hscx_irq.c"
119
120 static irqreturn_t
121 mic_interrupt(int intno, void *dev_id)
122 {
123         struct IsdnCardState *cs = dev_id;
124         u_char val;
125         u_long flags;
126
127         spin_lock_irqsave(&cs->lock, flags);
128         val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40);
129       Start_HSCX:
130         if (val)
131                 hscx_int_main(cs, val);
132         val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA);
133       Start_ISAC:
134         if (val)
135                 isac_interrupt(cs, val);
136         val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40);
137         if (val) {
138                 if (cs->debug & L1_DEB_HSCX)
139                         debugl1(cs, "HSCX IntStat after IntRoutine");
140                 goto Start_HSCX;
141         }
142         val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA);
143         if (val) {
144                 if (cs->debug & L1_DEB_ISAC)
145                         debugl1(cs, "ISAC IntStat after IntRoutine");
146                 goto Start_ISAC;
147         }
148         writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0xFF);
149         writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0xFF);
150         writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0xFF);
151         writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0x0);
152         writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0x0);
153         writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0x0);
154         spin_unlock_irqrestore(&cs->lock, flags);
155         return IRQ_HANDLED;
156 }
157
158 static void
159 release_io_mic(struct IsdnCardState *cs)
160 {
161         int bytecnt = 8;
162
163         if (cs->hw.mic.cfg_reg)
164                 release_region(cs->hw.mic.cfg_reg, bytecnt);
165 }
166
167 static int
168 mic_card_msg(struct IsdnCardState *cs, int mt, void *arg)
169 {
170         u_long flags;
171
172         switch (mt) {
173                 case CARD_RESET:
174                         return(0);
175                 case CARD_RELEASE:
176                         release_io_mic(cs);
177                         return(0);
178                 case CARD_INIT:
179                         spin_lock_irqsave(&cs->lock, flags);
180                         inithscx(cs); /* /RTSA := ISAC RST */
181                         inithscxisac(cs, 3);
182                         spin_unlock_irqrestore(&cs->lock, flags);
183                         return(0);
184                 case CARD_TEST:
185                         return(0);
186         }
187         return(0);
188 }
189
190 int __devinit
191 setup_mic(struct IsdnCard *card)
192 {
193         int bytecnt;
194         struct IsdnCardState *cs = card->cs;
195         char tmp[64];
196
197         strcpy(tmp, mic_revision);
198         printk(KERN_INFO "HiSax: mic driver Rev. %s\n", HiSax_getrev(tmp));
199         if (cs->typ != ISDN_CTYPE_MIC)
200                 return (0);
201
202         bytecnt = 8;
203         cs->hw.mic.cfg_reg = card->para[1];
204         cs->irq = card->para[0];
205         cs->hw.mic.adr = cs->hw.mic.cfg_reg + MIC_ADR;
206         cs->hw.mic.isac = cs->hw.mic.cfg_reg + MIC_ISAC;
207         cs->hw.mic.hscx = cs->hw.mic.cfg_reg + MIC_HSCX;
208
209         if (!request_region(cs->hw.mic.cfg_reg, bytecnt, "mic isdn")) {
210                 printk(KERN_WARNING
211                        "HiSax: ith mic config port %x-%x already in use\n",
212                        cs->hw.mic.cfg_reg,
213                        cs->hw.mic.cfg_reg + bytecnt);
214                 return (0);
215         }
216         printk(KERN_INFO "mic: defined at 0x%x IRQ %d\n",
217                 cs->hw.mic.cfg_reg, cs->irq);
218         setup_isac(cs);
219         cs->readisac = &ReadISAC;
220         cs->writeisac = &WriteISAC;
221         cs->readisacfifo = &ReadISACfifo;
222         cs->writeisacfifo = &WriteISACfifo;
223         cs->BC_Read_Reg = &ReadHSCX;
224         cs->BC_Write_Reg = &WriteHSCX;
225         cs->BC_Send_Data = &hscx_fill_fifo;
226         cs->cardmsg = &mic_card_msg;
227         cs->irq_func = &mic_interrupt;
228         ISACVersion(cs, "mic:");
229         if (HscxVersion(cs, "mic:")) {
230                 printk(KERN_WARNING
231                     "mic: wrong HSCX versions check IO address\n");
232                 release_io_mic(cs);
233                 return (0);
234         }
235         return (1);
236 }