1 /* $Id: avm_a1p.c,v 2.9.2.5 2004/01/24 20:47:19 keil Exp $
2 *
3 * low level stuff for the following AVM cards:
4 * A1 PCMCIA
5 * FRITZ!Card PCMCIA
6 * FRITZ!Card PCMCIA 2.0
7 *
8 * Author Carsten Paeth
9 * Copyright by Carsten Paeth <calle@calle.de>
10 *
11 * This software may be used and distributed according to the terms
12 * of the GNU General Public License, incorporated herein by reference.
13 *
14 */
15
16 #include <linux/init.h>
17 #include "hisax.h"
18 #include "isac.h"
19 #include "hscx.h"
20 #include "isdnl1.h"
21
22 /* register offsets */
23 #define ADDRREG_OFFSET 0x02
24 #define DATAREG_OFFSET 0x03
25 #define ASL0_OFFSET 0x04
26 #define ASL1_OFFSET 0x05
27 #define MODREG_OFFSET 0x06
28 #define VERREG_OFFSET 0x07
29
30 /* address offsets */
31 #define ISAC_FIFO_OFFSET 0x00
32 #define ISAC_REG_OFFSET 0x20
33 #define HSCX_CH_DIFF 0x40
34 #define HSCX_FIFO_OFFSET 0x80
35 #define HSCX_REG_OFFSET 0xa0
36
37 /* read bits ASL0 */
38 #define ASL0_R_TIMER 0x10 /* active low */
39 #define ASL0_R_ISAC 0x20 /* active low */
40 #define ASL0_R_HSCX 0x40 /* active low */
41 #define ASL0_R_TESTBIT 0x80
42 #define ASL0_R_IRQPENDING (ASL0_R_ISAC|ASL0_R_HSCX|ASL0_R_TIMER)
43
44 /* write bits ASL0 */
45 #define ASL0_W_RESET 0x01
46 #define ASL0_W_TDISABLE 0x02
47 #define ASL0_W_TRESET 0x04
48 #define ASL0_W_IRQENABLE 0x08
49 #define ASL0_W_TESTBIT 0x80
50
51 /* write bits ASL1 */
52 #define ASL1_W_LED0 0x10
53 #define ASL1_W_LED1 0x20
54 #define ASL1_W_ENABLE_S0 0xC0
55
56 #define byteout(addr,val) outb(val,addr)
57 #define bytein(addr) inb(addr)
58
59 static const char *avm_revision = "$Revision: 2.9.2.5 $";
60
61 static inline u_char
62 ReadISAC(struct IsdnCardState *cs, u_char offset)
63 {
64 u_char ret;
65
66 offset -= 0x20;
67 byteout(cs->hw.avm.cfg_reg+ADDRREG_OFFSET,ISAC_REG_OFFSET+offset);
68 ret = bytein(cs->hw.avm.cfg_reg+DATAREG_OFFSET);
69 return ret;
70 }
71
72 static inline void
73 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
74 {
75 offset -= 0x20;
76 byteout(cs->hw.avm.cfg_reg+ADDRREG_OFFSET,ISAC_REG_OFFSET+offset);
77 byteout(cs->hw.avm.cfg_reg+DATAREG_OFFSET, value);
78 }
79
80 static inline void
81 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
82 {
83 byteout(cs->hw.avm.cfg_reg+ADDRREG_OFFSET,ISAC_FIFO_OFFSET);
84 insb(cs->hw.avm.cfg_reg+DATAREG_OFFSET, data, size);
85 }
86
87 static inline void
88 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
89 {
90 byteout(cs->hw.avm.cfg_reg+ADDRREG_OFFSET,ISAC_FIFO_OFFSET);
91 outsb(cs->hw.avm.cfg_reg+DATAREG_OFFSET, data, size);
92 }
93
94 static inline u_char
95 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
96 {
97 u_char ret;
98
99 offset -= 0x20;
100 byteout(cs->hw.avm.cfg_reg+ADDRREG_OFFSET,
101 HSCX_REG_OFFSET+hscx*HSCX_CH_DIFF+offset);
102 ret = bytein(cs->hw.avm.cfg_reg+DATAREG_OFFSET);
103 return ret;
104 }
105
106 static inline void
107 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
108 {
109 offset -= 0x20;
110 byteout(cs->hw.avm.cfg_reg+ADDRREG_OFFSET,
111 HSCX_REG_OFFSET+hscx*HSCX_CH_DIFF+offset);
112 byteout(cs->hw.avm.cfg_reg+DATAREG_OFFSET, value);
113 }
114
115 static inline void
116 ReadHSCXfifo(struct IsdnCardState *cs, int hscx, u_char * data, int size)
117 {
118 byteout(cs->hw.avm.cfg_reg+ADDRREG_OFFSET,
119 HSCX_FIFO_OFFSET+hscx*HSCX_CH_DIFF);
120 insb(cs->hw.avm.cfg_reg+DATAREG_OFFSET, data, size);
121 }
122
123 static inline void
124 WriteHSCXfifo(struct IsdnCardState *cs, int hscx, u_char * data, int size)
125 {
126 byteout(cs->hw.avm.cfg_reg+ADDRREG_OFFSET,
127 HSCX_FIFO_OFFSET+hscx*HSCX_CH_DIFF);
128 outsb(cs->hw.avm.cfg_reg+DATAREG_OFFSET, data, size);
129 }
130
131 /*
132 * fast interrupt HSCX stuff goes here
133 */
134
135 #define READHSCX(cs, nr, reg) ReadHSCX(cs, nr, reg)
136 #define WRITEHSCX(cs, nr, reg, data) WriteHSCX(cs, nr, reg, data)
137 #define READHSCXFIFO(cs, nr, ptr, cnt) ReadHSCXfifo(cs, nr, ptr, cnt)
138 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) WriteHSCXfifo(cs, nr, ptr, cnt)
139
140 #include "hscx_irq.c"
141
142 static irqreturn_t
143 avm_a1p_interrupt(int intno, void *dev_id)
144 {
145 struct IsdnCardState *cs = dev_id;
146 u_char val, sval;
147 u_long flags;
148
149 spin_lock_irqsave(&cs->lock, flags);
150 while ((sval = (~bytein(cs->hw.avm.cfg_reg+ASL0_OFFSET) & ASL0_R_IRQPENDING))) {
151 if (cs->debug & L1_DEB_INTSTAT)
152 debugl1(cs, "avm IntStatus %x", sval);
153 if (sval & ASL0_R_HSCX) {
154 val = ReadHSCX(cs, 1, HSCX_ISTA);
155 if (val)
156 hscx_int_main(cs, val);
157 }
158 if (sval & ASL0_R_ISAC) {
159 val = ReadISAC(cs, ISAC_ISTA);
160 if (val)
161 isac_interrupt(cs, val);
162 }
163 }
164 WriteHSCX(cs, 0, HSCX_MASK, 0xff);
165 WriteHSCX(cs, 1, HSCX_MASK, 0xff);
166 WriteISAC(cs, ISAC_MASK, 0xff);
167 WriteISAC(cs, ISAC_MASK, 0x00);
168 WriteHSCX(cs, 0, HSCX_MASK, 0x00);
169 WriteHSCX(cs, 1, HSCX_MASK, 0x00);
170 spin_unlock_irqrestore(&cs->lock, flags);
171 return IRQ_HANDLED;
172 }
173
174 static int
175 AVM_card_msg(struct IsdnCardState *cs, int mt, void *arg)
176 {
177 u_long flags;
178
179 switch (mt) {
180 case CARD_RESET:
181 spin_lock_irqsave(&cs->lock, flags);
182 byteout(cs->hw.avm.cfg_reg+ASL0_OFFSET,0x00);
183 HZDELAY(HZ / 5 + 1);
184 byteout(cs->hw.avm.cfg_reg+ASL0_OFFSET,ASL0_W_RESET);
185 HZDELAY(HZ / 5 + 1);
186 byteout(cs->hw.avm.cfg_reg+ASL0_OFFSET,0x00);
187 spin_unlock_irqrestore(&cs->lock, flags);
188 return 0;
189
190 case CARD_RELEASE:
191 /* free_irq is done in HiSax_closecard(). */
192 /* free_irq(cs->irq, cs); */
193 return 0;
194
195 case CARD_INIT:
196 spin_lock_irqsave(&cs->lock, flags);
197 byteout(cs->hw.avm.cfg_reg+ASL0_OFFSET,ASL0_W_TDISABLE|ASL0_W_TRESET|ASL0_W_IRQENABLE);
198 clear_pending_isac_ints(cs);
199 clear_pending_hscx_ints(cs);
200 inithscxisac(cs, 1);
201 inithscxisac(cs, 2);
202 spin_unlock_irqrestore(&cs->lock, flags);
203 return 0;
204
205 case CARD_TEST:
206 /* we really don't need it for the PCMCIA Version */
207 return 0;
208
209 default:
210 /* all card drivers ignore others, so we do the same */
211 return 0;
212 }
213 return 0;
214 }
215
216 int __devinit setup_avm_a1_pcmcia(struct IsdnCard *card)
217 {
218 u_char model, vers;
219 struct IsdnCardState *cs = card->cs;
220 char tmp[64];
221
222
223 strcpy(tmp, avm_revision);
224 printk(KERN_INFO "HiSax: AVM A1 PCMCIA driver Rev. %s\n",
225 HiSax_getrev(tmp));
226 if (cs->typ != ISDN_CTYPE_A1_PCMCIA)
227 return (0);
228
229 cs->hw.avm.cfg_reg = card->para[1];
230 cs->irq = card->para[0];
231
232
233 byteout(cs->hw.avm.cfg_reg+ASL1_OFFSET, ASL1_W_ENABLE_S0);
234 byteout(cs->hw.avm.cfg_reg+ASL0_OFFSET,0x00);
235 HZDELAY(HZ / 5 + 1);
236 byteout(cs->hw.avm.cfg_reg+ASL0_OFFSET,ASL0_W_RESET);
237 HZDELAY(HZ / 5 + 1);
238 byteout(cs->hw.avm.cfg_reg+ASL0_OFFSET,0x00);
239
240 byteout(cs->hw.avm.cfg_reg+ASL0_OFFSET, ASL0_W_TDISABLE|ASL0_W_TRESET);
241
242 model = bytein(cs->hw.avm.cfg_reg+MODREG_OFFSET);
243 vers = bytein(cs->hw.avm.cfg_reg+VERREG_OFFSET);
244
245 printk(KERN_INFO "AVM A1 PCMCIA: io 0x%x irq %d model %d version %d\n",
246 cs->hw.avm.cfg_reg, cs->irq, model, vers);
247
248 setup_isac(cs);
249 cs->readisac = &ReadISAC;
250 cs->writeisac = &WriteISAC;
251 cs->readisacfifo = &ReadISACfifo;
252 cs->writeisacfifo = &WriteISACfifo;
253 cs->BC_Read_Reg = &ReadHSCX;
254 cs->BC_Write_Reg = &WriteHSCX;
255 cs->BC_Send_Data = &hscx_fill_fifo;
256 cs->cardmsg = &AVM_card_msg;
257 cs->irq_flags = IRQF_SHARED;
258 cs->irq_func = &avm_a1p_interrupt;
259
260 ISACVersion(cs, "AVM A1 PCMCIA:");
261 if (HscxVersion(cs, "AVM A1 PCMCIA:")) {
262 printk(KERN_WARNING
263 "AVM A1 PCMCIA: wrong HSCX versions check IO address\n");
264 return (0);
265 }
266 return (1);
267 }
268
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