blob: 253943029d254b39183ef25199b1e670f639e604 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* $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
Adrian Bunk672c3fd2005-06-25 14:59:18 -070019static const char *mic_revision = "$Revision: 1.12.2.4 $";
Linus Torvalds1da177e2005-04-16 15:20:36 -070020
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
31static inline u_char
32readreg(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
41static inline void
42readfifo(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
49static inline void
50writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
51{
52 byteout(ale, off);
53 byteout(adr, data);
54}
55
56static inline void
57writefifo(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
65static u_char
66ReadISAC(struct IsdnCardState *cs, u_char offset)
67{
68 return (readreg(cs->hw.mic.adr, cs->hw.mic.isac, offset));
69}
70
71static void
72WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
73{
74 writereg(cs->hw.mic.adr, cs->hw.mic.isac, offset, value);
75}
76
77static void
78ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
79{
80 readfifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
81}
82
83static void
84WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
85{
86 writefifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
87}
88
89static u_char
90ReadHSCX(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
96static void
97WriteHSCX(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
120static irqreturn_t
David Howells7d12e782006-10-05 14:55:46 +0100121mic_interrupt(int intno, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122{
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
Adrian Bunk672c3fd2005-06-25 14:59:18 -0700158static void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159release_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
167static int
168mic_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
Karsten Keil67eb5db2006-07-10 04:44:11 -0700190int __devinit
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191setup_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
Jeff Garzik83493042007-10-31 03:42:07 -0400211 "HiSax: ith mic config port %x-%x already in use\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 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}