1/* $Id: avm_a1.c,v 1.1.1.1 2007/08/03 18:52:35 Exp $
2 *
3 * low level stuff for AVM A1 (Fritz) isdn cards
4 *
5 * Author       Karsten Keil
6 * Copyright    by Karsten Keil      <keil@isdn4linux.de>
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[];
20static const char *avm_revision = "$Revision: 1.1.1.1 $";
21
22#define	 AVM_A1_STAT_ISAC	0x01
23#define	 AVM_A1_STAT_HSCX	0x02
24#define	 AVM_A1_STAT_TIMER	0x04
25
26#define byteout(addr,val) outb(val,addr)
27#define bytein(addr) inb(addr)
28
29static inline u_char
30readreg(unsigned int adr, u_char off)
31{
32	return (bytein(adr + off));
33}
34
35static inline void
36writereg(unsigned int adr, u_char off, u_char data)
37{
38	byteout(adr + off, data);
39}
40
41
42static inline void
43read_fifo(unsigned int adr, u_char * data, int size)
44{
45	insb(adr, data, size);
46}
47
48static void
49write_fifo(unsigned int adr, u_char * data, int size)
50{
51	outsb(adr, data, size);
52}
53
54/* Interface functions */
55
56static u_char
57ReadISAC(struct IsdnCardState *cs, u_char offset)
58{
59	return (readreg(cs->hw.avm.isac, offset));
60}
61
62static void
63WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
64{
65	writereg(cs->hw.avm.isac, offset, value);
66}
67
68static void
69ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
70{
71	read_fifo(cs->hw.avm.isacfifo, data, size);
72}
73
74static void
75WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
76{
77	write_fifo(cs->hw.avm.isacfifo, data, size);
78}
79
80static u_char
81ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
82{
83	return (readreg(cs->hw.avm.hscx[hscx], offset));
84}
85
86static void
87WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
88{
89	writereg(cs->hw.avm.hscx[hscx], offset, value);
90}
91
92/*
93 * fast interrupt HSCX stuff goes here
94 */
95
96#define READHSCX(cs, nr, reg) readreg(cs->hw.avm.hscx[nr], reg)
97#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.avm.hscx[nr], reg, data)
98#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.avm.hscxfifo[nr], ptr, cnt)
99#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.avm.hscxfifo[nr], ptr, cnt)
100
101#include "hscx_irq.c"
102
103static irqreturn_t
104avm_a1_interrupt(int intno, void *dev_id)
105{
106	struct IsdnCardState *cs = dev_id;
107	u_char val, sval;
108	u_long flags;
109
110	spin_lock_irqsave(&cs->lock, flags);
111	while (((sval = bytein(cs->hw.avm.cfg_reg)) & 0xf) != 0x7) {
112		if (!(sval & AVM_A1_STAT_TIMER)) {
113			byteout(cs->hw.avm.cfg_reg, 0x1E);
114			sval = bytein(cs->hw.avm.cfg_reg);
115		} else if (cs->debug & L1_DEB_INTSTAT)
116			debugl1(cs, "avm IntStatus %x", sval);
117		if (!(sval & AVM_A1_STAT_HSCX)) {
118			val = readreg(cs->hw.avm.hscx[1], HSCX_ISTA);
119			if (val)
120				hscx_int_main(cs, val);
121		}
122		if (!(sval & AVM_A1_STAT_ISAC)) {
123			val = readreg(cs->hw.avm.isac, ISAC_ISTA);
124			if (val)
125				isac_interrupt(cs, val);
126		}
127	}
128	writereg(cs->hw.avm.hscx[0], HSCX_MASK, 0xFF);
129	writereg(cs->hw.avm.hscx[1], HSCX_MASK, 0xFF);
130	writereg(cs->hw.avm.isac, ISAC_MASK, 0xFF);
131	writereg(cs->hw.avm.isac, ISAC_MASK, 0x0);
132	writereg(cs->hw.avm.hscx[0], HSCX_MASK, 0x0);
133	writereg(cs->hw.avm.hscx[1], HSCX_MASK, 0x0);
134	spin_unlock_irqrestore(&cs->lock, flags);
135	return IRQ_HANDLED;
136}
137
138static inline void
139release_ioregs(struct IsdnCardState *cs, int mask)
140{
141	release_region(cs->hw.avm.cfg_reg, 8);
142	if (mask & 1)
143		release_region(cs->hw.avm.isac + 32, 32);
144	if (mask & 2)
145		release_region(cs->hw.avm.isacfifo, 1);
146	if (mask & 4)
147		release_region(cs->hw.avm.hscx[0] + 32, 32);
148	if (mask & 8)
149		release_region(cs->hw.avm.hscxfifo[0], 1);
150	if (mask & 0x10)
151		release_region(cs->hw.avm.hscx[1] + 32, 32);
152	if (mask & 0x20)
153		release_region(cs->hw.avm.hscxfifo[1], 1);
154}
155
156static int
157AVM_card_msg(struct IsdnCardState *cs, int mt, void *arg)
158{
159	u_long flags;
160
161	switch (mt) {
162		case CARD_RESET:
163			return(0);
164		case CARD_RELEASE:
165			release_ioregs(cs, 0x3f);
166			return(0);
167		case CARD_INIT:
168			spin_lock_irqsave(&cs->lock, flags);
169			inithscxisac(cs, 1);
170			byteout(cs->hw.avm.cfg_reg, 0x16);
171			byteout(cs->hw.avm.cfg_reg, 0x1E);
172			inithscxisac(cs, 2);
173			spin_unlock_irqrestore(&cs->lock, flags);
174			return(0);
175		case CARD_TEST:
176			return(0);
177	}
178	return(0);
179}
180
181int __devinit
182setup_avm_a1(struct IsdnCard *card)
183{
184	u_char val;
185	struct IsdnCardState *cs = card->cs;
186	char tmp[64];
187
188	strcpy(tmp, avm_revision);
189	printk(KERN_INFO "HiSax: AVM driver Rev. %s\n", HiSax_getrev(tmp));
190	if (cs->typ != ISDN_CTYPE_A1)
191		return (0);
192
193	cs->hw.avm.cfg_reg = card->para[1] + 0x1800;
194	cs->hw.avm.isac = card->para[1] + 0x1400 - 0x20;
195	cs->hw.avm.hscx[0] = card->para[1] + 0x400 - 0x20;
196	cs->hw.avm.hscx[1] = card->para[1] + 0xc00 - 0x20;
197	cs->hw.avm.isacfifo = card->para[1] + 0x1000;
198	cs->hw.avm.hscxfifo[0] = card->para[1];
199	cs->hw.avm.hscxfifo[1] = card->para[1] + 0x800;
200	cs->irq = card->para[0];
201	if (!request_region(cs->hw.avm.cfg_reg, 8, "avm cfg")) {
202		printk(KERN_WARNING
203		       "HiSax: %s config port %x-%x already in use\n",
204		       CardType[card->typ],
205		       cs->hw.avm.cfg_reg,
206		       cs->hw.avm.cfg_reg + 8);
207		return (0);
208	}
209	if (!request_region(cs->hw.avm.isac + 32, 32, "HiSax isac")) {
210		printk(KERN_WARNING
211		       "HiSax: %s isac ports %x-%x already in use\n",
212		       CardType[cs->typ],
213		       cs->hw.avm.isac + 32,
214		       cs->hw.avm.isac + 64);
215		release_ioregs(cs, 0);
216		return (0);
217	}
218	if (!request_region(cs->hw.avm.isacfifo, 1, "HiSax isac fifo")) {
219		printk(KERN_WARNING
220		       "HiSax: %s isac fifo port %x already in use\n",
221		       CardType[cs->typ],
222		       cs->hw.avm.isacfifo);
223		release_ioregs(cs, 1);
224		return (0);
225	}
226	if (!request_region(cs->hw.avm.hscx[0] + 32, 32, "HiSax hscx A")) {
227		printk(KERN_WARNING
228		       "HiSax: %s hscx A ports %x-%x already in use\n",
229		       CardType[cs->typ],
230		       cs->hw.avm.hscx[0] + 32,
231		       cs->hw.avm.hscx[0] + 64);
232		release_ioregs(cs, 3);
233		return (0);
234	}
235	if (!request_region(cs->hw.avm.hscxfifo[0], 1, "HiSax hscx A fifo")) {
236		printk(KERN_WARNING
237		       "HiSax: %s hscx A fifo port %x already in use\n",
238		       CardType[cs->typ],
239		       cs->hw.avm.hscxfifo[0]);
240		release_ioregs(cs, 7);
241		return (0);
242	}
243	if (!request_region(cs->hw.avm.hscx[1] + 32, 32, "HiSax hscx B")) {
244		printk(KERN_WARNING
245		       "HiSax: %s hscx B ports %x-%x already in use\n",
246		       CardType[cs->typ],
247		       cs->hw.avm.hscx[1] + 32,
248		       cs->hw.avm.hscx[1] + 64);
249		release_ioregs(cs, 0xf);
250		return (0);
251	}
252	if (!request_region(cs->hw.avm.hscxfifo[1], 1, "HiSax hscx B fifo")) {
253		printk(KERN_WARNING
254		       "HiSax: %s hscx B fifo port %x already in use\n",
255		       CardType[cs->typ],
256		       cs->hw.avm.hscxfifo[1]);
257		release_ioregs(cs, 0x1f);
258		return (0);
259	}
260	byteout(cs->hw.avm.cfg_reg, 0x0);
261	HZDELAY(HZ / 5 + 1);
262	byteout(cs->hw.avm.cfg_reg, 0x1);
263	HZDELAY(HZ / 5 + 1);
264	byteout(cs->hw.avm.cfg_reg, 0x0);
265	HZDELAY(HZ / 5 + 1);
266	val = cs->irq;
267	if (val == 9)
268		val = 2;
269	byteout(cs->hw.avm.cfg_reg + 1, val);
270	HZDELAY(HZ / 5 + 1);
271	byteout(cs->hw.avm.cfg_reg, 0x0);
272	HZDELAY(HZ / 5 + 1);
273
274	val = bytein(cs->hw.avm.cfg_reg);
275	printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
276	       cs->hw.avm.cfg_reg, val);
277	val = bytein(cs->hw.avm.cfg_reg + 3);
278	printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
279	       cs->hw.avm.cfg_reg + 3, val);
280	val = bytein(cs->hw.avm.cfg_reg + 2);
281	printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
282	       cs->hw.avm.cfg_reg + 2, val);
283	val = bytein(cs->hw.avm.cfg_reg);
284	printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
285	       cs->hw.avm.cfg_reg, val);
286
287	printk(KERN_INFO
288	       "HiSax: %s config irq:%d cfg:0x%X\n",
289	       CardType[cs->typ], cs->irq,
290	       cs->hw.avm.cfg_reg);
291	printk(KERN_INFO
292	       "HiSax: isac:0x%X/0x%X\n",
293	       cs->hw.avm.isac + 32, cs->hw.avm.isacfifo);
294	printk(KERN_INFO
295	       "HiSax: hscx A:0x%X/0x%X  hscx B:0x%X/0x%X\n",
296	       cs->hw.avm.hscx[0] + 32, cs->hw.avm.hscxfifo[0],
297	       cs->hw.avm.hscx[1] + 32, cs->hw.avm.hscxfifo[1]);
298
299	cs->readisac = &ReadISAC;
300	cs->writeisac = &WriteISAC;
301	cs->readisacfifo = &ReadISACfifo;
302	cs->writeisacfifo = &WriteISACfifo;
303	cs->BC_Read_Reg = &ReadHSCX;
304	cs->BC_Write_Reg = &WriteHSCX;
305	cs->BC_Send_Data = &hscx_fill_fifo;
306	setup_isac(cs);
307	cs->cardmsg = &AVM_card_msg;
308	cs->irq_func = &avm_a1_interrupt;
309	ISACVersion(cs, "AVM A1:");
310	if (HscxVersion(cs, "AVM A1:")) {
311		printk(KERN_WARNING
312		       "AVM A1: wrong HSCX versions check IO address\n");
313		release_ioregs(cs, 0x3f);
314		return (0);
315	}
316	return (1);
317}
318