aboutsummaryrefslogtreecommitdiff
path: root/drivers/isdn/hisax/telespci.c
blob: 9c002c9dc7715c653957c9017f5c2113b66194ed (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
/* $Id: telespci.c,v 2.23.2.3 2004/01/13 14:31:26 keil Exp $
 *
 * low level stuff for Teles PCI isdn cards
 *
 * Author       Ton van Rosmalen
 *              Karsten Keil
 * Copyright    by Ton van Rosmalen
 *              by Karsten Keil      <keil@isdn4linux.de>
 *
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 *
 */

#include <linux/init.h>
#include "hisax.h"
#include "isac.h"
#include "hscx.h"
#include "isdnl1.h"
#include <linux/pci.h>

static const char *telespci_revision = "$Revision: 2.23.2.3 $";

#define ZORAN_PO_RQ_PEN	0x02000000
#define ZORAN_PO_WR	0x00800000
#define ZORAN_PO_GID0	0x00000000
#define ZORAN_PO_GID1	0x00100000
#define ZORAN_PO_GREG0	0x00000000
#define ZORAN_PO_GREG1	0x00010000
#define ZORAN_PO_DMASK	0xFF

#define WRITE_ADDR_ISAC	(ZORAN_PO_WR | ZORAN_PO_GID0 | ZORAN_PO_GREG0)
#define READ_DATA_ISAC	(ZORAN_PO_GID0 | ZORAN_PO_GREG1)
#define WRITE_DATA_ISAC	(ZORAN_PO_WR | ZORAN_PO_GID0 | ZORAN_PO_GREG1)
#define WRITE_ADDR_HSCX	(ZORAN_PO_WR | ZORAN_PO_GID1 | ZORAN_PO_GREG0)
#define READ_DATA_HSCX	(ZORAN_PO_GID1 | ZORAN_PO_GREG1)
#define WRITE_DATA_HSCX	(ZORAN_PO_WR | ZORAN_PO_GID1 | ZORAN_PO_GREG1)

#define ZORAN_WAIT_NOBUSY	do {		\
		portdata = readl(adr + 0x200);	\
	} while (portdata & ZORAN_PO_RQ_PEN)

static inline u_char
readisac(void __iomem *adr, u_char off)
{
	register unsigned int portdata;

	ZORAN_WAIT_NOBUSY;

	/* set address for ISAC */
	writel(WRITE_ADDR_ISAC | off, adr + 0x200);
	ZORAN_WAIT_NOBUSY;

	/* read data from ISAC */
	writel(READ_DATA_ISAC, adr + 0x200);
	ZORAN_WAIT_NOBUSY;
	return ((u_char)(portdata & ZORAN_PO_DMASK));
}

static inline void
writeisac(void __iomem *adr, u_char off, u_char data)
{
	register unsigned int portdata;

	ZORAN_WAIT_NOBUSY;

	/* set address for ISAC */
	writel(WRITE_ADDR_ISAC | off, adr + 0x200);
	ZORAN_WAIT_NOBUSY;

	/* write data to ISAC */
	writel(WRITE_DATA_ISAC | data, adr + 0x200);
	ZORAN_WAIT_NOBUSY;
}

static inline u_char
readhscx(void __iomem *adr, int hscx, u_char off)
{
	register unsigned int portdata;

	ZORAN_WAIT_NOBUSY;
	/* set address for HSCX */
	writel(WRITE_ADDR_HSCX | ((hscx ? 0x40 : 0) + off), adr + 0x200);
	ZORAN_WAIT_NOBUSY;

	/* read data from HSCX */
	writel(READ_DATA_HSCX, adr + 0x200);
	ZORAN_WAIT_NOBUSY;
	return ((u_char)(portdata & ZORAN_PO_DMASK));
}

static inline void
writehscx(void __iomem *adr, int hscx, u_char off, u_char data)
{
	register unsigned int portdata;

	ZORAN_WAIT_NOBUSY;
	/* set address for HSCX */
	writel(WRITE_ADDR_HSCX | ((hscx ? 0x40 : 0) + off), adr + 0x200);
	ZORAN_WAIT_NOBUSY;

	/* write data to HSCX */
	writel(WRITE_DATA_HSCX | data, adr + 0x200);
	ZORAN_WAIT_NOBUSY;
}

static inline void
read_fifo_isac(void __iomem *adr, u_char *data, int size)
{
	register unsigned int portdata;
	register int i;

	ZORAN_WAIT_NOBUSY;
	/* read data from ISAC */
	for (i = 0; i < size; i++) {
		/* set address for ISAC fifo */
		writel(WRITE_ADDR_ISAC | 0x1E, adr + 0x200);
		ZORAN_WAIT_NOBUSY;
		writel(READ_DATA_ISAC, adr + 0x200);
		ZORAN_WAIT_NOBUSY;
		data[i] = (u_char)(portdata & ZORAN_PO_DMASK);
	}
}

static void
write_fifo_isac(void __iomem *adr, u_char *data, int size)
{
	register unsigned int portdata;
	register int i;

	ZORAN_WAIT_NOBUSY;
	/* write data to ISAC */
	for (i = 0; i < size; i++) {
		/* set address for ISAC fifo */
		writel(WRITE_ADDR_ISAC | 0x1E, adr + 0x200);
		ZORAN_WAIT_NOBUSY;
		writel(WRITE_DATA_ISAC | data[i], adr + 0x200);
		ZORAN_WAIT_NOBUSY;
	}
}

static inline void
read_fifo_hscx(void __iomem *adr, int hscx, u_char *data, int size)
{
	register unsigned int portdata;
	register int i;

	ZORAN_WAIT_NOBUSY;
	/* read data from HSCX */
	for (i = 0; i < size; i++) {
		/* set address for HSCX fifo */
		writel(WRITE_ADDR_HSCX | (hscx ? 0x5F : 0x1F), adr + 0x200);
		ZORAN_WAIT_NOBUSY;
		writel(READ_DATA_HSCX, adr + 0x200);
		ZORAN_WAIT_NOBUSY;
		data[i] = (u_char) (portdata & ZORAN_PO_DMASK);
	}
}

static inline void
write_fifo_hscx(void __iomem *adr, int hscx, u_char *data, int size)
{
	unsigned int portdata;
	register int i;

	ZORAN_WAIT_NOBUSY;
	/* write data to HSCX */
	for (i = 0; i < size; i++) {
		/* set address for HSCX fifo */
		writel(WRITE_ADDR_HSCX | (hscx ? 0x5F : 0x1F), adr + 0x200);
		ZORAN_WAIT_NOBUSY;
		writel(WRITE_DATA_HSCX | data[i], adr + 0x200);
		ZORAN_WAIT_NOBUSY;
		udelay(10);
	}
}

/* Interface functions */

static u_char
ReadISAC(struct IsdnCardState *cs, u_char offset)
{
	return (readisac(cs->hw.teles0.membase, offset));
}

static void
WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
	writeisac(cs->hw.teles0.membase, offset, value);
}

static void
ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
	read_fifo_isac(cs->hw.teles0.membase, data, size);
}

static void
WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
	write_fifo_isac(cs->hw.teles0.membase, data, size);
}

static u_char
ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
{
	return (readhscx(cs->hw.teles0.membase, hscx, offset));
}

static void
WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
{
	writehscx(cs->hw.teles0.membase, hscx, offset, value);
}

/*
 * fast interrupt HSCX stuff goes here
 */

#define READHSCX(cs, nr, reg) readhscx(cs->hw.teles0.membase, nr, reg)
#define WRITEHSCX(cs, nr, reg, data) writehscx(cs->hw.teles0.membase, nr, reg, data)
#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)

#include "hscx_irq.c"

static irqreturn_t
telespci_interrupt(int intno, void *dev_id)
{
	struct IsdnCardState *cs = dev_id;
	u_char hval, ival;
	u_long flags;

	spin_lock_irqsave(&cs->lock, flags);
	hval = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
	if (hval)
		hscx_int_main(cs, hval);
	ival = readisac(cs->hw.teles0.membase, ISAC_ISTA);
	if ((hval | ival) == 0) {
		spin_unlock_irqrestore(&cs->lock, flags);
		return IRQ_NONE;
	}
	if (ival)
		isac_interrupt(cs, ival);
	/* Clear interrupt register for Zoran PCI controller */
	writel(0x70000000, cs->hw.teles0.membase + 0x3C);

	writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0xFF);
	writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0xFF);
	writeisac(cs->hw.teles0.membase, ISAC_MASK, 0xFF);
	writeisac(cs->hw.teles0.membase, ISAC_MASK, 0x0);
	writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0x0);
	writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0x0);
	spin_unlock_irqrestore(&cs->lock, flags);
	return IRQ_HANDLED;
}

static void
release_io_telespci(struct IsdnCardState *cs)
{
	iounmap(cs->hw.teles0.membase);
}

static int
TelesPCI_card_msg(struct IsdnCardState *cs, int mt, void *arg)
{
	u_long flags;

	switch (mt) {
	case CARD_RESET:
		return (0);
	case CARD_RELEASE:
		release_io_telespci(cs);
		return (0);
	case CARD_INIT:
		spin_lock_irqsave(&cs->lock, flags);
		inithscxisac(cs, 3);
		spin_unlock_irqrestore(&cs->lock, flags);
		return (0);
	case CARD_TEST:
		return (0);
	}
	return (0);
}

static struct pci_dev *dev_tel __devinitdata = NULL;

int __devinit
setup_telespci(struct IsdnCard *card)
{
	struct IsdnCardState *cs = card->cs;
	char tmp[64];

#ifdef __BIG_ENDIAN
#error "not running on big endian machines now"
#endif

	strcpy(tmp, telespci_revision);
	printk(KERN_INFO "HiSax: Teles/PCI driver Rev. %s\n", HiSax_getrev(tmp));
	if (cs->typ != ISDN_CTYPE_TELESPCI)
		return (0);

	if ((dev_tel = hisax_find_pci_device(PCI_VENDOR_ID_ZORAN, PCI_DEVICE_ID_ZORAN_36120, dev_tel))) {
		if (pci_enable_device(dev_tel))
			return (0);
		cs->irq = dev_tel->irq;
		if (!cs->irq) {
			printk(KERN_WARNING "Teles: No IRQ for PCI card found\n");
			return (0);
		}
		cs->hw.teles0.membase = ioremap(pci_resource_start(dev_tel, 0),
						PAGE_SIZE);
		printk(KERN_INFO "Found: Zoran, base-address: 0x%llx, irq: 0x%x\n",
		       (unsigned long long)pci_resource_start(dev_tel, 0),
		       dev_tel->irq);
	} else {
		printk(KERN_WARNING "TelesPCI: No PCI card found\n");
		return (0);
	}

	/* Initialize Zoran PCI controller */
	writel(0x00000000, cs->hw.teles0.membase + 0x28);
	writel(0x01000000, cs->hw.teles0.membase + 0x28);
	writel(0x01000000, cs->hw.teles0.membase + 0x28);
	writel(0x7BFFFFFF, cs->hw.teles0.membase + 0x2C);
	writel(0x70000000, cs->hw.teles0.membase + 0x3C);
	writel(0x61000000, cs->hw.teles0.membase + 0x40);
	/* writel(0x00800000, cs->hw.teles0.membase + 0x200); */

	printk(KERN_INFO
	       "HiSax: Teles PCI config irq:%d mem:%p\n",
	       cs->irq,
	       cs->hw.teles0.membase);

	setup_isac(cs);
	cs->readisac = &ReadISAC;
	cs->writeisac = &WriteISAC;
	cs->readisacfifo = &ReadISACfifo;
	cs->writeisacfifo = &WriteISACfifo;
	cs->BC_Read_Reg = &ReadHSCX;
	cs->BC_Write_Reg = &WriteHSCX;
	cs->BC_Send_Data = &hscx_fill_fifo;
	cs->cardmsg = &TelesPCI_card_msg;
	cs->irq_func = &telespci_interrupt;
	cs->irq_flags |= IRQF_SHARED;
	ISACVersion(cs, "TelesPCI:");
	if (HscxVersion(cs, "TelesPCI:")) {
		printk(KERN_WARNING
		       "TelesPCI: wrong HSCX versions check IO/MEM addresses\n");
		release_io_telespci(cs);
		return (0);
	}
	return (1);
}