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/drivers/isdn/hisax/teles0.c

http://github.com/mirrors/linux
C | 364 lines | 307 code | 33 blank | 24 comment | 38 complexity | 39b668b595b026bac8aa8e362dc4fc7f MD5 | raw file
  1/* $Id: teles0.c,v 2.15.2.4 2004/01/13 23:48:39 keil Exp $
  2 *
  3 * low level stuff for Teles Memory IO isdn cards
  4 *
  5 * Author       Karsten Keil
  6 *              based on the teles driver from Jan den Ouden
  7 * Copyright    by Karsten Keil      <keil@isdn4linux.de>
  8 *
  9 * This software may be used and distributed according to the terms
 10 * of the GNU General Public License, incorporated herein by reference.
 11 *
 12 * Thanks to    Jan den Ouden
 13 *              Fritz Elfert
 14 *              Beat Doebeli
 15 *
 16 */
 17
 18#include <linux/init.h>
 19#include "hisax.h"
 20#include "isdnl1.h"
 21#include "isac.h"
 22#include "hscx.h"
 23
 24static const char *teles0_revision = "$Revision: 2.15.2.4 $";
 25
 26#define TELES_IOMEM_SIZE	0x400
 27#define byteout(addr, val) outb(val, addr)
 28#define bytein(addr) inb(addr)
 29
 30static inline u_char
 31readisac(void __iomem *adr, u_char off)
 32{
 33	return readb(adr + ((off & 1) ? 0x2ff : 0x100) + off);
 34}
 35
 36static inline void
 37writeisac(void __iomem *adr, u_char off, u_char data)
 38{
 39	writeb(data, adr + ((off & 1) ? 0x2ff : 0x100) + off); mb();
 40}
 41
 42
 43static inline u_char
 44readhscx(void __iomem *adr, int hscx, u_char off)
 45{
 46	return readb(adr + (hscx ? 0x1c0 : 0x180) +
 47		     ((off & 1) ? 0x1ff : 0) + off);
 48}
 49
 50static inline void
 51writehscx(void __iomem *adr, int hscx, u_char off, u_char data)
 52{
 53	writeb(data, adr + (hscx ? 0x1c0 : 0x180) +
 54	       ((off & 1) ? 0x1ff : 0) + off); mb();
 55}
 56
 57static inline void
 58read_fifo_isac(void __iomem *adr, u_char *data, int size)
 59{
 60	register int i;
 61	register u_char __iomem *ad = adr + 0x100;
 62	for (i = 0; i < size; i++)
 63		data[i] = readb(ad);
 64}
 65
 66static inline void
 67write_fifo_isac(void __iomem *adr, u_char *data, int size)
 68{
 69	register int i;
 70	register u_char __iomem *ad = adr + 0x100;
 71	for (i = 0; i < size; i++) {
 72		writeb(data[i], ad); mb();
 73	}
 74}
 75
 76static inline void
 77read_fifo_hscx(void __iomem *adr, int hscx, u_char *data, int size)
 78{
 79	register int i;
 80	register u_char __iomem *ad = adr + (hscx ? 0x1c0 : 0x180);
 81	for (i = 0; i < size; i++)
 82		data[i] = readb(ad);
 83}
 84
 85static inline void
 86write_fifo_hscx(void __iomem *adr, int hscx, u_char *data, int size)
 87{
 88	int i;
 89	register u_char __iomem *ad = adr + (hscx ? 0x1c0 : 0x180);
 90	for (i = 0; i < size; i++) {
 91		writeb(data[i], ad); mb();
 92	}
 93}
 94
 95/* Interface functions */
 96
 97static u_char
 98ReadISAC(struct IsdnCardState *cs, u_char offset)
 99{
100	return (readisac(cs->hw.teles0.membase, offset));
101}
102
103static void
104WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
105{
106	writeisac(cs->hw.teles0.membase, offset, value);
107}
108
109static void
110ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
111{
112	read_fifo_isac(cs->hw.teles0.membase, data, size);
113}
114
115static void
116WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
117{
118	write_fifo_isac(cs->hw.teles0.membase, data, size);
119}
120
121static u_char
122ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
123{
124	return (readhscx(cs->hw.teles0.membase, hscx, offset));
125}
126
127static void
128WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
129{
130	writehscx(cs->hw.teles0.membase, hscx, offset, value);
131}
132
133/*
134 * fast interrupt HSCX stuff goes here
135 */
136
137#define READHSCX(cs, nr, reg) readhscx(cs->hw.teles0.membase, nr, reg)
138#define WRITEHSCX(cs, nr, reg, data) writehscx(cs->hw.teles0.membase, nr, reg, data)
139#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
140#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
141
142#include "hscx_irq.c"
143
144static irqreturn_t
145teles0_interrupt(int intno, void *dev_id)
146{
147	struct IsdnCardState *cs = dev_id;
148	u_char val;
149	u_long flags;
150	int count = 0;
151
152	spin_lock_irqsave(&cs->lock, flags);
153	val = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
154Start_HSCX:
155	if (val)
156		hscx_int_main(cs, val);
157	val = readisac(cs->hw.teles0.membase, ISAC_ISTA);
158Start_ISAC:
159	if (val)
160		isac_interrupt(cs, val);
161	count++;
162	val = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
163	if (val && count < 5) {
164		if (cs->debug & L1_DEB_HSCX)
165			debugl1(cs, "HSCX IntStat after IntRoutine");
166		goto Start_HSCX;
167	}
168	val = readisac(cs->hw.teles0.membase, ISAC_ISTA);
169	if (val && count < 5) {
170		if (cs->debug & L1_DEB_ISAC)
171			debugl1(cs, "ISAC IntStat after IntRoutine");
172		goto Start_ISAC;
173	}
174	writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0xFF);
175	writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0xFF);
176	writeisac(cs->hw.teles0.membase, ISAC_MASK, 0xFF);
177	writeisac(cs->hw.teles0.membase, ISAC_MASK, 0x0);
178	writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0x0);
179	writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0x0);
180	spin_unlock_irqrestore(&cs->lock, flags);
181	return IRQ_HANDLED;
182}
183
184static void
185release_io_teles0(struct IsdnCardState *cs)
186{
187	if (cs->hw.teles0.cfg_reg)
188		release_region(cs->hw.teles0.cfg_reg, 8);
189	iounmap(cs->hw.teles0.membase);
190	release_mem_region(cs->hw.teles0.phymem, TELES_IOMEM_SIZE);
191}
192
193static int
194reset_teles0(struct IsdnCardState *cs)
195{
196	u_char cfval;
197
198	if (cs->hw.teles0.cfg_reg) {
199		switch (cs->irq) {
200		case 2:
201		case 9:
202			cfval = 0x00;
203			break;
204		case 3:
205			cfval = 0x02;
206			break;
207		case 4:
208			cfval = 0x04;
209			break;
210		case 5:
211			cfval = 0x06;
212			break;
213		case 10:
214			cfval = 0x08;
215			break;
216		case 11:
217			cfval = 0x0A;
218			break;
219		case 12:
220			cfval = 0x0C;
221			break;
222		case 15:
223			cfval = 0x0E;
224			break;
225		default:
226			return (1);
227		}
228		cfval |= ((cs->hw.teles0.phymem >> 9) & 0xF0);
229		byteout(cs->hw.teles0.cfg_reg + 4, cfval);
230		HZDELAY(HZ / 10 + 1);
231		byteout(cs->hw.teles0.cfg_reg + 4, cfval | 1);
232		HZDELAY(HZ / 10 + 1);
233	}
234	writeb(0, cs->hw.teles0.membase + 0x80); mb();
235	HZDELAY(HZ / 5 + 1);
236	writeb(1, cs->hw.teles0.membase + 0x80); mb();
237	HZDELAY(HZ / 5 + 1);
238	return (0);
239}
240
241static int
242Teles_card_msg(struct IsdnCardState *cs, int mt, void *arg)
243{
244	u_long flags;
245
246	switch (mt) {
247	case CARD_RESET:
248		spin_lock_irqsave(&cs->lock, flags);
249		reset_teles0(cs);
250		spin_unlock_irqrestore(&cs->lock, flags);
251		return (0);
252	case CARD_RELEASE:
253		release_io_teles0(cs);
254		return (0);
255	case CARD_INIT:
256		spin_lock_irqsave(&cs->lock, flags);
257		inithscxisac(cs, 3);
258		spin_unlock_irqrestore(&cs->lock, flags);
259		return (0);
260	case CARD_TEST:
261		return (0);
262	}
263	return (0);
264}
265
266int setup_teles0(struct IsdnCard *card)
267{
268	u_char val;
269	struct IsdnCardState *cs = card->cs;
270	char tmp[64];
271
272	strcpy(tmp, teles0_revision);
273	printk(KERN_INFO "HiSax: Teles 8.0/16.0 driver Rev. %s\n", HiSax_getrev(tmp));
274	if ((cs->typ != ISDN_CTYPE_16_0) && (cs->typ != ISDN_CTYPE_8_0))
275		return (0);
276
277	if (cs->typ == ISDN_CTYPE_16_0)
278		cs->hw.teles0.cfg_reg = card->para[2];
279	else			/* 8.0 */
280		cs->hw.teles0.cfg_reg = 0;
281
282	if (card->para[1] < 0x10000) {
283		card->para[1] <<= 4;
284		printk(KERN_INFO
285		       "Teles0: membase configured DOSish, assuming 0x%lx\n",
286		       (unsigned long) card->para[1]);
287	}
288	cs->irq = card->para[0];
289	if (cs->hw.teles0.cfg_reg) {
290		if (!request_region(cs->hw.teles0.cfg_reg, 8, "teles cfg")) {
291			printk(KERN_WARNING
292			       "HiSax: %s config port %x-%x already in use\n",
293			       CardType[card->typ],
294			       cs->hw.teles0.cfg_reg,
295			       cs->hw.teles0.cfg_reg + 8);
296			return (0);
297		}
298	}
299	if (cs->hw.teles0.cfg_reg) {
300		if ((val = bytein(cs->hw.teles0.cfg_reg + 0)) != 0x51) {
301			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
302			       cs->hw.teles0.cfg_reg + 0, val);
303			release_region(cs->hw.teles0.cfg_reg, 8);
304			return (0);
305		}
306		if ((val = bytein(cs->hw.teles0.cfg_reg + 1)) != 0x93) {
307			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
308			       cs->hw.teles0.cfg_reg + 1, val);
309			release_region(cs->hw.teles0.cfg_reg, 8);
310			return (0);
311		}
312		val = bytein(cs->hw.teles0.cfg_reg + 2);	/* 0x1e=without AB
313								 * 0x1f=with AB
314								 * 0x1c 16.3 ???
315								 */
316		if (val != 0x1e && val != 0x1f) {
317			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
318			       cs->hw.teles0.cfg_reg + 2, val);
319			release_region(cs->hw.teles0.cfg_reg, 8);
320			return (0);
321		}
322	}
323	/* 16.0 and 8.0 designed for IOM1 */
324	test_and_set_bit(HW_IOM1, &cs->HW_Flags);
325	cs->hw.teles0.phymem = card->para[1];
326	if (!request_mem_region(cs->hw.teles0.phymem, TELES_IOMEM_SIZE, "teles iomem")) {
327		printk(KERN_WARNING
328		       "HiSax: %s memory region %lx-%lx already in use\n",
329		       CardType[card->typ],
330		       cs->hw.teles0.phymem,
331		       cs->hw.teles0.phymem + TELES_IOMEM_SIZE);
332		if (cs->hw.teles0.cfg_reg)
333			release_region(cs->hw.teles0.cfg_reg, 8);
334		return (0);
335	}
336	cs->hw.teles0.membase = ioremap(cs->hw.teles0.phymem, TELES_IOMEM_SIZE);
337	printk(KERN_INFO
338	       "HiSax: %s config irq:%d mem:%p cfg:0x%X\n",
339	       CardType[cs->typ], cs->irq,
340	       cs->hw.teles0.membase, cs->hw.teles0.cfg_reg);
341	if (reset_teles0(cs)) {
342		printk(KERN_WARNING "Teles0: wrong IRQ\n");
343		release_io_teles0(cs);
344		return (0);
345	}
346	setup_isac(cs);
347	cs->readisac = &ReadISAC;
348	cs->writeisac = &WriteISAC;
349	cs->readisacfifo = &ReadISACfifo;
350	cs->writeisacfifo = &WriteISACfifo;
351	cs->BC_Read_Reg = &ReadHSCX;
352	cs->BC_Write_Reg = &WriteHSCX;
353	cs->BC_Send_Data = &hscx_fill_fifo;
354	cs->cardmsg = &Teles_card_msg;
355	cs->irq_func = &teles0_interrupt;
356	ISACVersion(cs, "Teles0:");
357	if (HscxVersion(cs, "Teles0:")) {
358		printk(KERN_WARNING
359		       "Teles0: wrong HSCX versions check IO/MEM addresses\n");
360		release_io_teles0(cs);
361		return (0);
362	}
363	return (1);
364}