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 extern const char *CardType[];
20
21 static const char *mic_revision = "$Revision: 1.12.2.4 $";
22
23 #define byteout(addr,val) outb(val,addr)
24 #define bytein(addr) inb(addr)
25
26 #define MIC_ISAC 2
27 #define MIC_HSCX 1
28 #define MIC_ADR 7
29
30 /* CARD_ADR (Write) */
31 #define MIC_RESET 0x3 /* same as DOS driver */
32
33 static inline u_char
34 readreg(unsigned int ale, unsigned int adr, u_char off)
35 {
36 register u_char ret;
37
38 byteout(ale, off);
39 ret = bytein(adr);
40 return (ret);
41 }
42
43 static inline void
44 readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
45 {
46 byteout(ale, off);
47 insb(adr, data, size);
48 }
49
50
51 static inline void
52 writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
53 {
54 byteout(ale, off);
55 byteout(adr, data);
56 }
57
58 static inline void
59 writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
60 {
61 byteout(ale, off);
62 outsb(adr, data, size);
63 }
64
65 /* Interface functions */
66
67 static u_char
68 ReadISAC(struct IsdnCardState *cs, u_char offset)
69 {
70 return (readreg(cs->hw.mic.adr, cs->hw.mic.isac, offset));
71 }
72
73 static void
74 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
75 {
76 writereg(cs->hw.mic.adr, cs->hw.mic.isac, offset, value);
77 }
78
79 static void
80 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
81 {
82 readfifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
83 }
84
85 static void
86 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
87 {
88 writefifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
89 }
90
91 static u_char
92 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
93 {
94 return (readreg(cs->hw.mic.adr,
95 cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0)));
96 }
97
98 static void
99 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
100 {
101 writereg(cs->hw.mic.adr,
102 cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0), value);
103 }
104
105 /*
106 * fast interrupt HSCX stuff goes here
107 */
108
109 #define READHSCX(cs, nr, reg) readreg(cs->hw.mic.adr, \
110 cs->hw.mic.hscx, reg + (nr ? 0x40 : 0))
111 #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.mic.adr, \
112 cs->hw.mic.hscx, reg + (nr ? 0x40 : 0), data)
113
114 #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.mic.adr, \
115 cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt)
116
117 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.mic.adr, \
118 cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt)
119
120 #include "hscx_irq.c"
121
122 static irqreturn_t
123 mic_interrupt(int intno, void *dev_id)
124 {
125 struct IsdnCardState *cs = dev_id;
126 u_char val;
127 u_long flags;
128
129 spin_lock_irqsave(&cs->lock, flags);
130 val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40);
131 Start_HSCX:
132 if (val)
133 hscx_int_main(cs, val);
134 val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA);
135 Start_ISAC:
136 if (val)
137 isac_interrupt(cs, val);
138 val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40);
139 if (val) {
140 if (cs->debug & L1_DEB_HSCX)
141 debugl1(cs, "HSCX IntStat after IntRoutine");
142 goto Start_HSCX;
143 }
144 val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA);
145 if (val) {
146 if (cs->debug & L1_DEB_ISAC)
147 debugl1(cs, "ISAC IntStat after IntRoutine");
148 goto Start_ISAC;
149 }
150 writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0xFF);
151 writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0xFF);
152 writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0xFF);
153 writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0x0);
154 writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0x0);
155 writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0x0);
156 spin_unlock_irqrestore(&cs->lock, flags);
157 return IRQ_HANDLED;
158 }
159
160 static void
161 release_io_mic(struct IsdnCardState *cs)
162 {
163 int bytecnt = 8;
164
165 if (cs->hw.mic.cfg_reg)
166 release_region(cs->hw.mic.cfg_reg, bytecnt);
167 }
168
169 static int
170 mic_card_msg(struct IsdnCardState *cs, int mt, void *arg)
171 {
172 u_long flags;
173
174 switch (mt) {
175 case CARD_RESET:
176 return(0);
177 case CARD_RELEASE:
178 release_io_mic(cs);
179 return(0);
180 case CARD_INIT:
181 spin_lock_irqsave(&cs->lock, flags);
182 inithscx(cs); /* /RTSA := ISAC RST */
183 inithscxisac(cs, 3);
184 spin_unlock_irqrestore(&cs->lock, flags);
185 return(0);
186 case CARD_TEST:
187 return(0);
188 }
189 return(0);
190 }
191
192 int __devinit
193 setup_mic(struct IsdnCard *card)
194 {
195 int bytecnt;
196 struct IsdnCardState *cs = card->cs;
197 char tmp[64];
198
199 strcpy(tmp, mic_revision);
200 printk(KERN_INFO "HiSax: mic driver Rev. %s\n", HiSax_getrev(tmp));
201 if (cs->typ != ISDN_CTYPE_MIC)
202 return (0);
203
204 bytecnt = 8;
205 cs->hw.mic.cfg_reg = card->para[1];
206 cs->irq = card->para[0];
207 cs->hw.mic.adr = cs->hw.mic.cfg_reg + MIC_ADR;
208 cs->hw.mic.isac = cs->hw.mic.cfg_reg + MIC_ISAC;
209 cs->hw.mic.hscx = cs->hw.mic.cfg_reg + MIC_HSCX;
210
211 if (!request_region(cs->hw.mic.cfg_reg, bytecnt, "mic isdn")) {
212 printk(KERN_WARNING
213 "HiSax: %s config port %x-%x already in use\n",
214 CardType[card->typ],
215 cs->hw.mic.cfg_reg,
216 cs->hw.mic.cfg_reg + bytecnt);
217 return (0);
218 }
219 printk(KERN_INFO "mic: defined at 0x%x IRQ %d\n",
220 cs->hw.mic.cfg_reg, cs->irq);
221 setup_isac(cs);
222 cs->readisac = &ReadISAC;
223 cs->writeisac = &WriteISAC;
224 cs->readisacfifo = &ReadISACfifo;
225 cs->writeisacfifo = &WriteISACfifo;
226 cs->BC_Read_Reg = &ReadHSCX;
227 cs->BC_Write_Reg = &WriteHSCX;
228 cs->BC_Send_Data = &hscx_fill_fifo;
229 cs->cardmsg = &mic_card_msg;
230 cs->irq_func = &mic_interrupt;
231 ISACVersion(cs, "mic:");
232 if (HscxVersion(cs, "mic:")) {
233 printk(KERN_WARNING
234 "mic: wrong HSCX versions check IO address\n");
235 release_io_mic(cs);
236 return (0);
237 }
238 return (1);
239 }
240
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