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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/isdn/hisax/mic.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/isdn/hisax/mic.c')
-rw-r--r--drivers/isdn/hisax/mic.c239
1 files changed, 239 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/mic.c b/drivers/isdn/hisax/mic.c
new file mode 100644
index 000000000000..3ac4484a4886
--- /dev/null
+++ b/drivers/isdn/hisax/mic.c
@@ -0,0 +1,239 @@
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
19extern const char *CardType[];
20
21const 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
33static inline u_char
34readreg(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
43static inline void
44readfifo(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
51static inline void
52writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
53{
54 byteout(ale, off);
55 byteout(adr, data);
56}
57
58static inline void
59writefifo(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
67static u_char
68ReadISAC(struct IsdnCardState *cs, u_char offset)
69{
70 return (readreg(cs->hw.mic.adr, cs->hw.mic.isac, offset));
71}
72
73static void
74WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
75{
76 writereg(cs->hw.mic.adr, cs->hw.mic.isac, offset, value);
77}
78
79static void
80ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
81{
82 readfifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
83}
84
85static void
86WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
87{
88 writefifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
89}
90
91static u_char
92ReadHSCX(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
98static void
99WriteHSCX(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
122static irqreturn_t
123mic_interrupt(int intno, void *dev_id, struct pt_regs *regs)
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
160void
161release_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
169static int
170mic_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
192int __init
193setup_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}