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
readreg(unsigned int ale,unsigned int adr,u_char off)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
readfifo(unsigned int ale,unsigned int adr,u_char off,u_char * data,int size)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
writereg(unsigned int ale,unsigned int adr,u_char off,u_char data)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
writefifo(unsigned int ale,unsigned int adr,u_char off,u_char * data,int size)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
ReadISAC(struct IsdnCardState * cs,u_char offset)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
WriteISAC(struct IsdnCardState * cs,u_char offset,u_char value)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
ReadISACfifo(struct IsdnCardState * cs,u_char * data,int size)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
WriteISACfifo(struct IsdnCardState * cs,u_char * data,int size)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
ReadHSCX(struct IsdnCardState * cs,int hscx,u_char offset)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
WriteHSCX(struct IsdnCardState * cs,int hscx,u_char offset,u_char value)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
mic_interrupt(int intno,void * dev_id)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
release_io_mic(struct IsdnCardState * cs)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
mic_card_msg(struct IsdnCardState * cs,int mt,void * arg)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
setup_mic(struct IsdnCard * card)190 int setup_mic(struct IsdnCard *card)
191 {
192 int bytecnt;
193 struct IsdnCardState *cs = card->cs;
194 char tmp[64];
195
196 strcpy(tmp, mic_revision);
197 printk(KERN_INFO "HiSax: mic driver Rev. %s\n", HiSax_getrev(tmp));
198 if (cs->typ != ISDN_CTYPE_MIC)
199 return (0);
200
201 bytecnt = 8;
202 cs->hw.mic.cfg_reg = card->para[1];
203 cs->irq = card->para[0];
204 cs->hw.mic.adr = cs->hw.mic.cfg_reg + MIC_ADR;
205 cs->hw.mic.isac = cs->hw.mic.cfg_reg + MIC_ISAC;
206 cs->hw.mic.hscx = cs->hw.mic.cfg_reg + MIC_HSCX;
207
208 if (!request_region(cs->hw.mic.cfg_reg, bytecnt, "mic isdn")) {
209 printk(KERN_WARNING
210 "HiSax: ith mic config port %x-%x already in use\n",
211 cs->hw.mic.cfg_reg,
212 cs->hw.mic.cfg_reg + bytecnt);
213 return (0);
214 }
215 printk(KERN_INFO "mic: defined at 0x%x IRQ %d\n",
216 cs->hw.mic.cfg_reg, cs->irq);
217 setup_isac(cs);
218 cs->readisac = &ReadISAC;
219 cs->writeisac = &WriteISAC;
220 cs->readisacfifo = &ReadISACfifo;
221 cs->writeisacfifo = &WriteISACfifo;
222 cs->BC_Read_Reg = &ReadHSCX;
223 cs->BC_Write_Reg = &WriteHSCX;
224 cs->BC_Send_Data = &hscx_fill_fifo;
225 cs->cardmsg = &mic_card_msg;
226 cs->irq_func = &mic_interrupt;
227 ISACVersion(cs, "mic:");
228 if (HscxVersion(cs, "mic:")) {
229 printk(KERN_WARNING
230 "mic: wrong HSCX versions check IO address\n");
231 release_io_mic(cs);
232 return (0);
233 }
234 return (1);
235 }
236