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
59static const char *avm_revision = "$Revision: 2.9.2.5 $";
60
61static inline u_char
62ReadISAC(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
72static inline void
73WriteISAC(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
80static inline void
81ReadISACfifo(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
87static inline void
88WriteISACfifo(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
94static inline u_char
95ReadHSCX(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
106static inline void
107WriteHSCX(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
115static inline void
116ReadHSCXfifo(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
123static inline void
124WriteHSCXfifo(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
142static irqreturn_t
143avm_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
174static int
175AVM_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
216int __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